22112200021021 has 16 divisors (see below), whose sum is σ = 24239834431488. Its totient is φ = 20004351001200.

The previous prime is 22112200020949. The next prime is 22112200021039. The reversal of 22112200021021 is 12012000221122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22112200021021 - 2⁷ = 22112200020893 is a prime.

It is a super-2 number, since 2×22112200021021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22112200020986 and 22112200021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112200021061) 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, 3247725 + ... + 7400818.

It is an arithmetic number, because the mean of its divisors is an integer number (1514989651968).

Almost surely, 2^{22112200021021} is an apocalyptic number.

It is an amenable number.

22112200021021 is a deficient number, since it is larger than the sum of its proper divisors (2127634410467).

22112200021021 is a wasteful number, since it uses less digits than its factorization.

22112200021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10649472.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22112200021021 its reverse (12012000221122), we get a palindrome (34124200242143).

The spelling of 22112200021021 in words is "twenty-two trillion, one hundred twelve billion, two hundred million, twenty-one thousand, twenty-one".