121539026992 has 40 divisors (see below), whose sum is σ = 243066911472. Its totient is φ = 58834713600.

The previous prime is 121539026969. The next prime is 121539027007. The reversal of 121539026992 is 299620935121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621213 + ... + 793084.

Almost surely, 2^121539026992 is an apocalyptic number.

It is an amenable number.

121539026992 is a deficient number, since it is larger than the sum of its proper divisors (121527884480).

121539026992 is a wasteful number, since it uses less digits than its factorization.

121539026992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414477 (or 1414471 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 49.

The spelling of 121539026992 in words is "one hundred twenty-one billion, five hundred thirty-nine million, twenty-six thousand, nine hundred ninety-two".