121892315 has 32 divisors (see below), whose sum is σ = 160807680. Its totient is φ = 88373376.

The previous prime is 121892299. The next prime is 121892317. The reversal of 121892315 is 513298121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121892315 - 2⁴ = 121892299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121892317) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216224 + ... + 216786.

It is an arithmetic number, because the mean of its divisors is an integer number (5025240).

Almost surely, 2^121892315 is an apocalyptic number.

121892315 is a deficient number, since it is larger than the sum of its proper divisors (38915365).

121892315 is a wasteful number, since it uses less digits than its factorization.

121892315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683.

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

The square root of 121892315 is about 11040.4852701319. The cubic root of 121892315 is about 495.8215992013.

The spelling of 121892315 in words is "one hundred twenty-one million, eight hundred ninety-two thousand, three hundred fifteen".