121177078320 has 40 divisors (see below), whose sum is σ = 375648943536. Its totient is φ = 32313887488.

The previous prime is 121177078301. The next prime is 121177078339. The reversal of 121177078320 is 23870771121.

It is an interprime number because it is at equal distance from previous prime (121177078301) and next prime (121177078339).

It is a tau number, because it is divible by the number of its divisors (40).

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, 252452007 + ... + 252452486.

Almost surely, 2^121177078320 is an apocalyptic number.

121177078320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121177078320 is an abundant number, since it is smaller than the sum of its proper divisors (254471865216).

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

121177078320 is a wasteful number, since it uses less digits than its factorization.

121177078320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504904509 (or 504904503 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 39.

The spelling of 121177078320 in words is "one hundred twenty-one billion, one hundred seventy-seven million, seventy-eight thousand, three hundred twenty".