21002200000001 has 16 divisors (see below), whose sum is σ = 23073241426368. Its totient is φ = 18958534963200.

The previous prime is 21002199999941. The next prime is 21002200000039. The reversal of 21002200000001 is 10000000220012.

It is a cyclic number.

It is not a de Polignac number, because 21002200000001 - 2³⁸ = 20727322093057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002200006001) 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, 9443936 + ... + 11453921.

It is an arithmetic number, because the mean of its divisors is an integer number (1442077589148).

Almost surely, 2^{21002200000001} is an apocalyptic number.

It is an amenable number.

21002200000001 is a deficient number, since it is larger than the sum of its proper divisors (2071041426367).

21002200000001 is a wasteful number, since it uses less digits than its factorization.

21002200000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20898512.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 21002200000001 its reverse (10000000220012), we get a palindrome (31002200220013).

The spelling of 21002200000001 in words is "twenty-one trillion, two billion, two hundred million, one", and thus it is an aban number.