21133231014 has 32 divisors (see below), whose sum is σ = 48317230080. Its totient is φ = 6036478272.

The previous prime is 21133230991. The next prime is 21133231033. The reversal of 21133231014 is 41013233112.

21133231014 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21133231014² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100402 + ... + 228794.

It is an arithmetic number, because the mean of its divisors is an integer number (1509913440).

Almost surely, 2^21133231014 is an apocalyptic number.

21133231014 is an abundant number, since it is smaller than the sum of its proper divisors (27183999066).

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

21133231014 is a wasteful number, since it uses less digits than its factorization.

21133231014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132324.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21133231014 its reverse (41013233112), we get a palindrome (62146464126).

The spelling of 21133231014 in words is "twenty-one billion, one hundred thirty-three million, two hundred thirty-one thousand, fourteen".