121313312 has 24 divisors (see below), whose sum is σ = 240181200. Its totient is φ = 60314944.

The previous prime is 121313303. The next prime is 121313317. The reversal of 121313312 is 213313121.

It is not an unprimeable number, because it can be changed into a prime (121313317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4862 + ... + 16317.

It is an arithmetic number, because the mean of its divisors is an integer number (10007550).

Almost surely, 2^121313312 is an apocalyptic number.

It is an amenable number.

121313312 is a deficient number, since it is larger than the sum of its proper divisors (118867888).

121313312 is a wasteful number, since it uses less digits than its factorization.

121313312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21368 (or 21360 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 121313312 is about 11014.2322474152. The cubic root of 121313312 is about 495.0352823200.

Adding to 121313312 its reverse (213313121), we get a palindrome (334626433).

The spelling of 121313312 in words is "one hundred twenty-one million, three hundred thirteen thousand, three hundred twelve".