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120021120212 = 2279839435661
BaseRepresentation
bin110111111000111010…
…0001111010011010100
3102110210110220121222112
41233301310033103110
53431300401321322
6131045325050152
711446143455240
oct1576164172324
9373713817875
10120021120212
114699a880044
121b3169b6958
13b4196a0636
145b48083420
1531c6c785e2
hex1bf1d0f4d4

120021120212 has 24 divisors (see below), whose sum is σ = 240067188480. Its totient is φ = 51432276960.

The previous prime is 120021120211. The next prime is 120021120253. The reversal of 120021120212 is 212021120021.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021120211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57662 + ... + 493322.

It is an arithmetic number, because the mean of its divisors is an integer number (10002799520).

Almost surely, 2120021120212 is an apocalyptic number.

It is an amenable number.

120021120212 is an abundant number, since it is smaller than the sum of its proper divisors (120046068268).

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

120021120212 is a wasteful number, since it uses less digits than its factorization.

120021120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445511 (or 445509 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 120021120212 its reverse (212021120021), we get a palindrome (332042240233).

The spelling of 120021120212 in words is "one hundred twenty billion, twenty-one million, one hundred twenty thousand, two hundred twelve".

Divisors: 1 2 4 7 14 28 9839 19678 39356 68873 137746 275492 435661 871322 1742644 3049627 6099254 12198508 4286468579 8572937158 17145874316 30005280053 60010560106 120021120212