21052250014 has 16 divisors (see below), whose sum is σ = 33076657152. Its totient is φ = 10030178488.

The previous prime is 21052249997. The next prime is 21052250057. The reversal of 21052250014 is 41005225012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 857974 + ... + 882169.

It is an arithmetic number, because the mean of its divisors is an integer number (2067291072).

Almost surely, 2^21052250014 is an apocalyptic number.

21052250014 is a deficient number, since it is larger than the sum of its proper divisors (12024407138).

21052250014 is a wasteful number, since it uses less digits than its factorization.

21052250014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740431.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 21052250014 its reverse (41005225012), we get a palindrome (62057475026).

The spelling of 21052250014 in words is "twenty-one billion, fifty-two million, two hundred fifty thousand, fourteen".