21022330005 has 64 divisors (see below), whose sum is σ = 38101155840. Its totient is φ = 10995163200.

The previous prime is 21022330003. The next prime is 21022330009. The reversal of 21022330005 is 50003322012.

It is not a de Polignac number, because 21022330005 - 2¹ = 21022330003 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21022330005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022330003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1824994 + ... + 1836476.

It is an arithmetic number, because the mean of its divisors is an integer number (595330560).

Almost surely, 2^21022330005 is an apocalyptic number.

It is an amenable number.

21022330005 is a deficient number, since it is larger than the sum of its proper divisors (17078825835).

21022330005 is a wasteful number, since it uses less digits than its factorization.

21022330005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11759 (or 11753 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 21022330005 its reverse (50003322012), we get a palindrome (71025652017).

The spelling of 21022330005 in words is "twenty-one billion, twenty-two million, three hundred thirty thousand, five".