121510252 has 24 divisors (see below), whose sum is σ = 218629152. Its totient is φ = 59068800.

The previous prime is 121510241. The next prime is 121510253. The reversal of 121510252 is 252015121.

It is a super-2 number, since 2×121510252² = 29529482682207008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121510253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17802 + ... + 23662.

It is an arithmetic number, because the mean of its divisors is an integer number (9109548).

Almost surely, 2^121510252 is an apocalyptic number.

It is an amenable number.

121510252 is a deficient number, since it is larger than the sum of its proper divisors (97118900).

121510252 is a wasteful number, since it uses less digits than its factorization.

121510252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6009 (or 6007 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 121510252 is about 11023.1688728786. The cubic root of 121510252 is about 495.3030175425.

Adding to 121510252 its reverse (252015121), we get a palindrome (373525373).

The spelling of 121510252 in words is "one hundred twenty-one million, five hundred ten thousand, two hundred fifty-two".