121666200 has 48 divisors (see below), whose sum is σ = 377167080. Its totient is φ = 32444160.

The previous prime is 121666189. The next prime is 121666213. The reversal of 121666200 is 2666121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100789 + ... + 101988.

Almost surely, 2^121666200 is an apocalyptic number.

121666200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121666200 is an abundant number, since it is smaller than the sum of its proper divisors (255500880).

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

121666200 is a wasteful number, since it uses less digits than its factorization.

121666200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202796 (or 202787 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 121666200 is about 11030.2402512366. The cubic root of 121666200 is about 495.5148199568.

The spelling of 121666200 in words is "one hundred twenty-one million, six hundred sixty-six thousand, two hundred".