121522152 has 32 divisors (see below), whose sum is σ = 305030880. Its totient is φ = 40344000.

The previous prime is 121522129. The next prime is 121522153. The reversal of 121522152 is 251225121.

It is a super-2 number, since 2×121522152² = 29535266853422208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121522153) 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, 4063 + ... + 16110.

It is an arithmetic number, because the mean of its divisors is an integer number (9532215).

Almost surely, 2^121522152 is an apocalyptic number.

121522152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121522152 is an abundant number, since it is smaller than the sum of its proper divisors (183508728).

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

121522152 is a wasteful number, since it uses less digits than its factorization.

121522152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20433 (or 20429 counting only the distinct ones).

The product of its digits is 400, while the sum is 21.

The square root of 121522152 is about 11023.7086318534. The cubic root of 121522152 is about 495.3191860369.

Adding to 121522152 its reverse (251225121), we get a palindrome (372747273).

The spelling of 121522152 in words is "one hundred twenty-one million, five hundred twenty-two thousand, one hundred fifty-two".