121125015 has 48 divisors (see below), whose sum is σ = 239016960. Its totient is φ = 56168640.

The previous prime is 121125001. The next prime is 121125049. The reversal of 121125015 is 510521121.

It is not a de Polignac number, because 121125015 - 2⁴ = 121124999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6066 + ... + 16704.

It is an arithmetic number, because the mean of its divisors is an integer number (4979520).

Almost surely, 2^121125015 is an apocalyptic number.

121125015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121125015 is a deficient number, since it is larger than the sum of its proper divisors (117891945).

121125015 is a wasteful number, since it uses less digits than its factorization.

121125015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10684 (or 10681 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 121125015 is about 11005.6810329938. The cubic root of 121125015 is about 494.7790259483.

Adding to 121125015 its reverse (510521121), we get a palindrome (631646136).

The spelling of 121125015 in words is "one hundred twenty-one million, one hundred twenty-five thousand, fifteen".