21015413022 has 32 divisors (see below), whose sum is σ = 44617716000. Its totient is φ = 6576109568.

The previous prime is 21015412949. The next prime is 21015413047. The reversal of 21015413022 is 22031451012.

It is a self number, because there is not a number n which added to its sum of digits gives 21015413022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225147 + ... + 304502.

It is an arithmetic number, because the mean of its divisors is an integer number (1394303625).

Almost surely, 2^21015413022 is an apocalyptic number.

21015413022 is an abundant number, since it is smaller than the sum of its proper divisors (23602302978).

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

21015413022 is a wasteful number, since it uses less digits than its factorization.

21015413022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530060.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 21015413022 its reverse (22031451012), we get a palindrome (43046864034).

The spelling of 21015413022 in words is "twenty-one billion, fifteen million, four hundred thirteen thousand, twenty-two".