21052314015 has 32 divisors (see below), whose sum is σ = 34173881856. Its totient is φ = 11064654720.

The previous prime is 21052313981. The next prime is 21052314043. The reversal of 21052314015 is 51041325012.

It is a happy number.

It is not a de Polignac number, because 21052314015 - 2¹² = 21052309919 is a prime.

It is a super-3 number, since 3×21052314015³ (a number of 32 digits) contains 333 as substring.

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 31 ways as a sum of consecutive naturals, for example, 3774769 + ... + 3780341.

It is an arithmetic number, because the mean of its divisors is an integer number (1067933808).

Almost surely, 2^21052314015 is an apocalyptic number.

21052314015 is a deficient number, since it is larger than the sum of its proper divisors (13121567841).

21052314015 is a wasteful number, since it uses less digits than its factorization.

21052314015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9199.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 21052314015 its reverse (51041325012), we get a palindrome (72093639027).

The spelling of 21052314015 in words is "twenty-one billion, fifty-two million, three hundred fourteen thousand, fifteen".