121215672600 has 96 divisors (see below), whose sum is σ = 409929387840. Its totient is φ = 29385616000.

The previous prime is 121215672587. The next prime is 121215672623. The reversal of 121215672600 is 6276512121.

121215672600 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9176406 + ... + 9189605.

It is an arithmetic number, because the mean of its divisors is an integer number (4270097790).

Almost surely, 2^121215672600 is an apocalyptic number.

121215672600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121215672600 is an abundant number, since it is smaller than the sum of its proper divisors (288713715240).

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

121215672600 is a wasteful number, since it uses less digits than its factorization.

121215672600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18366041 (or 18366032 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The spelling of 121215672600 in words is "one hundred twenty-one billion, two hundred fifteen million, six hundred seventy-two thousand, six hundred".