120621315 has 32 divisors (see below), whose sum is σ = 202461696. Its totient is φ = 61205760.

The previous prime is 120621299. The next prime is 120621323. The reversal of 120621315 is 513126021.

It is not a de Polignac number, because 120621315 - 2⁴ = 120621299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120621291 and 120621300.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71967 + ... + 73623.

It is an arithmetic number, because the mean of its divisors is an integer number (6326928).

Almost surely, 2^120621315 is an apocalyptic number.

120621315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120621315 is a deficient number, since it is larger than the sum of its proper divisors (81840381).

120621315 is a wasteful number, since it uses less digits than its factorization.

120621315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 120621315 is about 10982.7735568025. The cubic root of 120621315 is about 494.0922246366.

Adding to 120621315 its reverse (513126021), we get a palindrome (633747336).

The spelling of 120621315 in words is "one hundred twenty million, six hundred twenty-one thousand, three hundred fifteen".