120938921636 has 48 divisors (see below), whose sum is σ = 233548343280. Its totient is φ = 54441185280.

The previous prime is 120938921591. The next prime is 120938921639. The reversal of 120938921636 is 636129839021.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 13032100 + 120925889536 = 3610^2 + 347744^2 .

It is not an unprimeable number, because it can be changed into a prime (120938921639) 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, 11287850 + ... + 11298558.

It is an arithmetic number, because the mean of its divisors is an integer number (4865590485).

Almost surely, 2^120938921636 is an apocalyptic number.

It is an amenable number.

120938921636 is a deficient number, since it is larger than the sum of its proper divisors (112609421644).

120938921636 is a wasteful number, since it uses less digits than its factorization.

120938921636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16064 (or 16062 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 50.

The spelling of 120938921636 in words is "one hundred twenty billion, nine hundred thirty-eight million, nine hundred twenty-one thousand, six hundred thirty-six".