121039689125 has 16 divisors (see below), whose sum is σ = 151734955008. Its totient is φ = 96397506000.

The previous prime is 121039689119. The next prime is 121039689137. The reversal of 121039689125 is 521986930121.

It is not a de Polignac number, because 121039689125 - 2³² = 116744721829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121039689125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2143241 + ... + 2198990.

It is an arithmetic number, because the mean of its divisors is an integer number (9483434688).

Almost surely, 2^121039689125 is an apocalyptic number.

It is an amenable number.

121039689125 is a deficient number, since it is larger than the sum of its proper divisors (30695265883).

121039689125 is an equidigital number, since it uses as much as digits as its factorization.

121039689125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4342469 (or 4342459 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 121039689125 in words is "one hundred twenty-one billion, thirty-nine million, six hundred eighty-nine thousand, one hundred twenty-five".