22211001000021 has 16 divisors (see below), whose sum is σ = 30308229362880. Its totient is φ = 14464562344320.

The previous prime is 22211001000017. The next prime is 22211001000029. The reversal of 22211001000021 is 12000010011222.

It is not a de Polignac number, because 22211001000021 - 2² = 22211001000017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22211000999970 and 22211001000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211001000029) 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, 501105970 + ... + 501150291.

It is an arithmetic number, because the mean of its divisors is an integer number (1894264335180).

Almost surely, 2^{22211001000021} is an apocalyptic number.

It is an amenable number.

22211001000021 is a deficient number, since it is larger than the sum of its proper divisors (8097228362859).

22211001000021 is a wasteful number, since it uses less digits than its factorization.

22211001000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002256436.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22211001000021 its reverse (12000010011222), we get a palindrome (34211011011243).

The spelling of 22211001000021 in words is "twenty-two trillion, two hundred eleven billion, one million, twenty-one", and thus it is an aban number.