120821126722928 has 10 divisors (see below), whose sum is σ = 234090933025704. Its totient is φ = 60410563361456.

The previous prime is 120821126722867. The next prime is 120821126722939. The reversal of 120821126722928 is 829227621128021.

It is a self number, because there is not a number n which added to its sum of digits gives 120821126722928.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3775660210076 + ... + 3775660210107.

Almost surely, 2^{120821126722928} is an apocalyptic number.

It is an amenable number.

120821126722928 is a deficient number, since it is larger than the sum of its proper divisors (113269806302776).

120821126722928 is an equidigital number, since it uses as much as digits as its factorization.

120821126722928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7551320420191 (or 7551320420185 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 53.

The spelling of 120821126722928 in words is "one hundred twenty trillion, eight hundred twenty-one billion, one hundred twenty-six million, seven hundred twenty-two thousand, nine hundred twenty-eight".