121259471872 has 88 divisors (see below), whose sum is σ = 302213839680. Its totient is φ = 47243919360.

The previous prime is 121259471869. The next prime is 121259471881. The reversal of 121259471872 is 278174952121.

It is a tau number, because it is divible by the number of its divisors (88).

It is a congruent number.

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, 690097 + ... + 847792.

Almost surely, 2^121259471872 is an apocalyptic number.

It is an amenable number.

121259471872 is an abundant number, since it is smaller than the sum of its proper divisors (180954367808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121259471872 is a wasteful number, since it uses less digits than its factorization.

121259471872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537927 (or 1537909 counting only the distinct ones).

The product of its digits is 564480, while the sum is 49.

The spelling of 121259471872 in words is "one hundred twenty-one billion, two hundred fifty-nine million, four hundred seventy-one thousand, eight hundred seventy-two".