21113133232 has 10 divisors (see below), whose sum is σ = 40906695668. Its totient is φ = 10556566608.

The previous prime is 21113133211. The next prime is 21113133277. The reversal of 21113133232 is 23233131112.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659785398 + ... + 659785429.

Almost surely, 2^21113133232 is an apocalyptic number.

It is an amenable number.

21113133232 is a deficient number, since it is larger than the sum of its proper divisors (19793562436).

21113133232 is a wasteful number, since it uses less digits than its factorization.

21113133232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319570835 (or 1319570829 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

Adding to 21113133232 its reverse (23233131112), we get a palindrome (44346264344).

The spelling of 21113133232 in words is "twenty-one billion, one hundred thirteen million, one hundred thirty-three thousand, two hundred thirty-two".