121813600 has 36 divisors (see below), whose sum is σ = 297379404. Its totient is φ = 48725120.

The previous prime is 121813597. The next prime is 121813621. The reversal of 121813600 is 6318121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75334 + ... + 76933.

It is an arithmetic number, because the mean of its divisors is an integer number (8260539).

Almost surely, 2^121813600 is an apocalyptic number.

121813600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121813600 is an abundant number, since it is smaller than the sum of its proper divisors (175565804).

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

121813600 is a wasteful number, since it uses less digits than its factorization.

121813600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152287 (or 152274 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 121813600 is about 11036.9198601784. The cubic root of 121813600 is about 495.7148465007.

The spelling of 121813600 in words is "one hundred twenty-one million, eight hundred thirteen thousand, six hundred".