21330014431 has 12 divisors (see below), whose sum is σ = 24253853400. Its totient is φ = 18722266640.

The previous prime is 21330014417. The next prime is 21330014483. The reversal of 21330014431 is 13441003312.

It is not a de Polignac number, because 21330014431 - 2²⁹ = 20793143519 is a prime.

It is a super-2 number, since 2×21330014431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330014401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3035821 + ... + 3042838.

It is an arithmetic number, because the mean of its divisors is an integer number (2021154450).

Almost surely, 2^21330014431 is an apocalyptic number.

21330014431 is a deficient number, since it is larger than the sum of its proper divisors (2923838969).

21330014431 is a wasteful number, since it uses less digits than its factorization.

21330014431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6078710 (or 6078699 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21330014431 its reverse (13441003312), we get a palindrome (34771017743).

The spelling of 21330014431 in words is "twenty-one billion, three hundred thirty million, fourteen thousand, four hundred thirty-one".