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122212021212972 = 22331959557515211
BaseRepresentation
bin11011110010011010110100…
…000111001001011100101100
3121000201100120212221110111000
4123302122310013021130230
5112004310204412303342
61111531232200200300
734512345546233325
oct3362326407113454
9530640525843430
10122212021212972
1135a38910a06449
1211859612769090
13532670c661282
14222714438144c
15e1e03611844c
hex6f26b41c972c

122212021212972 has 48 divisors (see below), whose sum is σ = 333522085187200. Its totient is φ = 38593269856080.

The previous prime is 122212021212887. The next prime is 122212021212973. The reversal of 122212021212972 is 279212120212221.

122212021212972 is a `hidden beast` number, since 1 + 2 + 221 + 20 + 2 + 121 + 297 + 2 = 666.

122212021212972 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (122212021212973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29778755554 + ... + 29778759657.

Almost surely, 2122212021212972 is an apocalyptic number.

122212021212972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122212021212972 is an abundant number, since it is smaller than the sum of its proper divisors (211310063974228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122212021212972 is a wasteful number, since it uses less digits than its factorization.

122212021212972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59557515243 (or 59557515235 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 122212021212972 in words is "one hundred twenty-two trillion, two hundred twelve billion, twenty-one million, two hundred twelve thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 9 12 18 19 27 36 38 54 57 76 108 114 171 228 342 513 684 1026 2052 59557515211 119115030422 178672545633 238230060844 357345091266 536017636899 714690182532 1072035273798 1131592789009 1608052910697 2144070547596 2263185578018 3216105821394 3394778367027 4526371156036 6432211642788 6789556734054 10184335101081 13579113468108 20368670202162 30553005303243 40737340404324 61106010606486 122212021212972