21133833112 has 32 divisors (see below), whose sum is σ = 46747653120. Its totient is φ = 8765183520.

The previous prime is 21133833109. The next prime is 21133833121.

21133833112 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6085198 + ... + 6088669.

It is an arithmetic number, because the mean of its divisors is an integer number (1460864160).

Almost surely, 2^21133833112 is an apocalyptic number.

It is an amenable number.

21133833112 is an abundant number, since it is smaller than the sum of its proper divisors (25613820008).

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

21133833112 is a wasteful number, since it uses less digits than its factorization.

21133833112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12173911 (or 12173907 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The spelling of 21133833112 in words is "twenty-one billion, one hundred thirty-three million, eight hundred thirty-three thousand, one hundred twelve".