121568900 has 36 divisors (see below), whose sum is σ = 264306000. Its totient is φ = 48535200.

The previous prime is 121568879. The next prime is 121568933. The reversal of 121568900 is 9865121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80351 + ... + 81849.

Almost surely, 2^121568900 is an apocalyptic number.

121568900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121568900 is an abundant number, since it is smaller than the sum of its proper divisors (142737100).

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

121568900 is a wasteful number, since it uses less digits than its factorization.

121568900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324 (or 2317 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 121568900 is about 11025.8287670361. The cubic root of 121568900 is about 495.3826921889.

The spelling of 121568900 in words is "one hundred twenty-one million, five hundred sixty-eight thousand, nine hundred".