121813392120 has 128 divisors (see below), whose sum is σ = 435804503040. Its totient is φ = 26632488960.

The previous prime is 121813392083. The next prime is 121813392131. The reversal of 121813392120 is 21293318121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3133201 + ... + 3171840.

It is an arithmetic number, because the mean of its divisors is an integer number (3404722680).

Almost surely, 2^121813392120 is an apocalyptic number.

121813392120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121813392120 is an abundant number, since it is smaller than the sum of its proper divisors (313991110920).

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

121813392120 is a wasteful number, since it uses less digits than its factorization.

121813392120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6305085 (or 6305081 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The spelling of 121813392120 in words is "one hundred twenty-one billion, eight hundred thirteen million, three hundred ninety-two thousand, one hundred twenty".