21314331051 has 16 divisors (see below), whose sum is σ = 30621690624. Its totient is φ = 13109441184.

The previous prime is 21314331047. The next prime is 21314331067. The reversal of 21314331051 is 15013341312.

It is not a de Polignac number, because 21314331051 - 2² = 21314331047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21314331011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73551 + ... + 219176.

It is an arithmetic number, because the mean of its divisors is an integer number (1913855664).

Almost surely, 2^21314331051 is an apocalyptic number.

21314331051 is a deficient number, since it is larger than the sum of its proper divisors (9307359573).

21314331051 is a wasteful number, since it uses less digits than its factorization.

21314331051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294610.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 21314331051 its reverse (15013341312), we get a palindrome (36327672363).

The spelling of 21314331051 in words is "twenty-one billion, three hundred fourteen million, three hundred thirty-one thousand, fifty-one".