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220213031212 = 224361116318047
BaseRepresentation
bin1100110100010110111…
…0000011000100101100
3210001102000200001122001
43031011232003010230
512101444013444322
6245055305302044
721624040611106
oct3150556030454
9701360601561
10220213031212
1185434573779
1236818a94924
13179c5b94585
14a9307bc576
155adcc70827
hex3345b8312c

220213031212 has 48 divisors (see below), whose sum is σ = 401166323712. Its totient is φ = 105686038080.

The previous prime is 220213031197. The next prime is 220213031249. The reversal of 220213031212 is 212130312022.

It is a self number, because there is not a number n which added to its sum of digits gives 220213031212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12193173 + ... + 12211219.

It is an arithmetic number, because the mean of its divisors is an integer number (8357631744).

Almost surely, 2220213031212 is an apocalyptic number.

It is an amenable number.

220213031212 is a deficient number, since it is larger than the sum of its proper divisors (180953292500).

220213031212 is a wasteful number, since it uses less digits than its factorization.

220213031212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19318 (or 19316 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 220213031212 its reverse (212130312022), we get a palindrome (432343343234).

The spelling of 220213031212 in words is "two hundred twenty billion, two hundred thirteen million, thirty-one thousand, two hundred twelve".

Divisors: 1 2 4 43 61 86 122 172 244 1163 2326 2623 4652 5246 10492 18047 36094 50009 70943 72188 100018 141886 200036 283772 776021 1100867 1552042 2201734 3050549 3104084 4403468 6101098 12202196 20988661 41977322 47337281 83954644 94674562 189349124 902512423 1280308321 1805024846 2560616642 3610049692 5121233284 55053257803 110106515606 220213031212