121531652 has 12 divisors (see below), whose sum is σ = 232015056. Its totient is φ = 55241640.

The previous prime is 121531649. The next prime is 121531661. The reversal of 121531652 is 256135121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1380998 + ... + 1381085.

It is an arithmetic number, because the mean of its divisors is an integer number (19334588).

Almost surely, 2^121531652 is an apocalyptic number.

It is an amenable number.

121531652 is a deficient number, since it is larger than the sum of its proper divisors (110483404).

121531652 is a wasteful number, since it uses less digits than its factorization.

121531652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762098 (or 2762096 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 121531652 is about 11024.1395129053. The cubic root of 121531652 is about 495.3320929009.

Adding to 121531652 its reverse (256135121), we get a palindrome (377666773).

The spelling of 121531652 in words is "one hundred twenty-one million, five hundred thirty-one thousand, six hundred fifty-two".