120656000521 has 16 divisors (see below), whose sum is σ = 142505895168. Its totient is φ = 100004083200.

The previous prime is 120656000513. The next prime is 120656000527. The reversal of 120656000521 is 125000656021.

It is not a de Polignac number, because 120656000521 - 2³ = 120656000513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120656000521.

It is not an unprimeable number, because it can be changed into a prime (120656000527) by changing a digit.

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, 1827765 + ... + 1892626.

It is an arithmetic number, because the mean of its divisors is an integer number (8906618448).

Almost surely, 2^120656000521 is an apocalyptic number.

It is an amenable number.

120656000521 is a deficient number, since it is larger than the sum of its proper divisors (21849894647).

120656000521 is a wasteful number, since it uses less digits than its factorization.

120656000521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3720552.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 120656000521 its reverse (125000656021), we get a palindrome (245656656542).

The spelling of 120656000521 in words is "one hundred twenty billion, six hundred fifty-six million, five hundred twenty-one", and thus it is an aban number.