21133313110 has 96 divisors (see below), whose sum is σ = 47495263680. Its totient is φ = 6628737024.

The previous prime is 21133313083. The next prime is 21133313137. The reversal of 21133313110 is 1131333112.

It is an interprime number because it is at equal distance from previous prime (21133313083) and next prime (21133313137).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1328886 + ... + 1344694.

It is an arithmetic number, because the mean of its divisors is an integer number (494742330).

Almost surely, 2^21133313110 is an apocalyptic number.

21133313110 is an abundant number, since it is smaller than the sum of its proper divisors (26361950570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21133313110 is a wasteful number, since it uses less digits than its factorization.

21133313110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15962 (or 15949 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 21133313110 its reverse (1131333112), we get a palindrome (22264646222).

The spelling of 21133313110 in words is "twenty-one billion, one hundred thirty-three million, three hundred thirteen thousand, one hundred ten".