921133012 has 6 divisors (see below), whose sum is σ = 1611982778. Its totient is φ = 460566504.

The previous prime is 921133009. The next prime is 921133013. The reversal of 921133012 is 210331129.

It can be written as a sum of positive squares in only one way, i.e., 703098256 + 218034756 = 26516^2 + 14766^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921133013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115141623 + ... + 115141630.

Almost surely, 2^921133012 is an apocalyptic number.

It is an amenable number.

921133012 is a deficient number, since it is larger than the sum of its proper divisors (690849766).

921133012 is a wasteful number, since it uses less digits than its factorization.

921133012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230283257 (or 230283255 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 921133012 is about 30350.1731790776. The cubic root of 921133012 is about 972.9879214200.

The spelling of 921133012 in words is "nine hundred twenty-one million, one hundred thirty-three thousand, twelve".