21022210013 has 32 divisors (see below), whose sum is σ = 26603126784. Its totient is φ = 16186021632.

The previous prime is 21022210007. The next prime is 21022210021. The reversal of 21022210013 is 31001222012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21022210013 - 2¹² = 21022205917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21022210013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022210073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1269956 + ... + 1286402.

It is an arithmetic number, because the mean of its divisors is an integer number (831347712).

Almost surely, 2^21022210013 is an apocalyptic number.

21022210013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21022210013 is a deficient number, since it is larger than the sum of its proper divisors (5580916771).

21022210013 is a wasteful number, since it uses less digits than its factorization.

21022210013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16961.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21022210013 its reverse (31001222012), we get a palindrome (52023432025).

The spelling of 21022210013 in words is "twenty-one billion, twenty-two million, two hundred ten thousand, thirteen".