21133313104 has 20 divisors (see below), whose sum is σ = 40988167264. Its totient is φ = 10555721568.

The previous prime is 21133313083. The next prime is 21133313137. The reversal of 21133313104 is 40131333112.

It is a super-2 number, since 2×21133313104² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 667482 + ... + 698425.

Almost surely, 2^21133313104 is an apocalyptic number.

It is an amenable number.

21133313104 is a deficient number, since it is larger than the sum of its proper divisors (19854854160).

21133313104 is a wasteful number, since it uses less digits than its factorization.

21133313104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366882 (or 1366876 counting only the distinct ones).

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

Adding to 21133313104 its reverse (40131333112), we get a palindrome (61264646216).

The spelling of 21133313104 in words is "twenty-one billion, one hundred thirty-three million, three hundred thirteen thousand, one hundred four".