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120221012020 = 225107316317761
BaseRepresentation
bin110111111110110111…
…0110001000000110100
3102111022102001011222211
41233331232301000310
53432203034341040
6131121225303204
711454121512214
oct1577556610064
9374272034884
10120221012020
1146a9269978a
121b371934b04
13b44bc1a605
145b66838244
1531d95b08ea
hex1bfdbb1034

120221012020 has 48 divisors (see below), whose sum is σ = 254918518848. Its totient is φ = 47621237760.

The previous prime is 120221012003. The next prime is 120221012047. The reversal of 120221012020 is 20210122021.

It is a happy number.

It is a super-2 number, since 2×1202210120202 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6759940 + ... + 6777700.

It is an arithmetic number, because the mean of its divisors is an integer number (5310802476).

Almost surely, 2120221012020 is an apocalyptic number.

120221012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120221012020 is an abundant number, since it is smaller than the sum of its proper divisors (134697506828).

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

120221012020 is a wasteful number, since it uses less digits than its factorization.

120221012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21040 (or 21038 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 120221012020 its reverse (20210122021), we get a palindrome (140431134041).

The spelling of 120221012020 in words is "one hundred twenty billion, two hundred twenty-one million, twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 107 214 428 535 1070 2140 3163 6326 12652 15815 17761 31630 35522 63260 71044 88805 177610 338441 355220 676882 1353764 1692205 1900427 3384410 3800854 6768820 7601708 9502135 19004270 38008540 56178043 112356086 224712172 280890215 561780430 1123560860 6011050601 12022101202 24044202404 30055253005 60110506010 120221012020