22100120000021 has 16 divisors (see below), whose sum is σ = 26237543846400. Its totient is φ = 18213228273408.

The previous prime is 22100119999949. The next prime is 22100120000027. The reversal of 22100120000021 is 12000002100122.

It is a happy number.

It is not a de Polignac number, because 22100120000021 - 2¹⁸ = 22100119737877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22100119999957 and 22100120000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100120000027) 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, 227707940 + ... + 227804973.

It is an arithmetic number, because the mean of its divisors is an integer number (1639846490400).

Almost surely, 2^{22100120000021} is an apocalyptic number.

It is an amenable number.

22100120000021 is a deficient number, since it is larger than the sum of its proper divisors (4137423846379).

22100120000021 is a wasteful number, since it uses less digits than its factorization.

22100120000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455513188.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22100120000021 its reverse (12000002100122), we get a palindrome (34100122100143).

The spelling of 22100120000021 in words is "twenty-two trillion, one hundred billion, one hundred twenty million, twenty-one", and thus it is an aban number.