121331152 has 40 divisors (see below), whose sum is σ = 239529312. Its totient is φ = 59529600.

The previous prime is 121331113. The next prime is 121331153. The reversal of 121331152 is 251133121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121331153) 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, 224002 + ... + 224542.

Almost surely, 2^121331152 is an apocalyptic number.

It is an amenable number.

121331152 is a deficient number, since it is larger than the sum of its proper divisors (118198160).

121331152 is a wasteful number, since it uses less digits than its factorization.

121331152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 781 counting only the distinct ones).

The product of its digits is 180, while the sum is 19.

The square root of 121331152 is about 11015.0420789028. The cubic root of 121331152 is about 495.0595473035.

Adding to 121331152 its reverse (251133121), we get a palindrome (372464273).

The spelling of 121331152 in words is "one hundred twenty-one million, three hundred thirty-one thousand, one hundred fifty-two".