21622210563 has 16 divisors (see below), whose sum is σ = 30893256576. Its totient is φ = 13403418240.

The previous prime is 21622210523. The next prime is 21622210607. The reversal of 21622210563 is 36501222612.

It is not a de Polignac number, because 21622210563 - 2⁸ = 21622210307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21622210563.

It is not an unprimeable number, because it can be changed into a prime (21622210523) 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, 2549773 + ... + 2558238.

It is an arithmetic number, because the mean of its divisors is an integer number (1930828536).

Almost surely, 2^21622210563 is an apocalyptic number.

21622210563 is a deficient number, since it is larger than the sum of its proper divisors (9271046013).

21622210563 is a wasteful number, since it uses less digits than its factorization.

21622210563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5108114.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 21622210563 in words is "twenty-one billion, six hundred twenty-two million, two hundred ten thousand, five hundred sixty-three".