121080729904 has 40 divisors (see below), whose sum is σ = 240346686272. Its totient is φ = 59059264320.

The previous prime is 121080729881. The next prime is 121080729923. The reversal of 121080729904 is 409927080121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449467 + ... + 666469.

Almost surely, 2^121080729904 is an apocalyptic number.

It is an amenable number.

121080729904 is a deficient number, since it is larger than the sum of its proper divisors (119265956368).

121080729904 is a wasteful number, since it uses less digits than its factorization.

121080729904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217865 (or 217859 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 121080729904 in words is "one hundred twenty-one billion, eighty million, seven hundred twenty-nine thousand, nine hundred four".