22120000000021 has 12 divisors (see below), whose sum is σ = 28070649351360. Its totient is φ = 17236363635960.

The previous prime is 22119999999997. The next prime is 22120000000037. The reversal of 22120000000021 is 12000000002122.

It is not a de Polignac number, because 22120000000021 - 2⁵ = 22119999999989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22119999999935 and 22120000000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120000003021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20519479981 + ... + 20519481058.

It is an arithmetic number, because the mean of its divisors is an integer number (2339220779280).

Almost surely, 2^{22120000000021} is an apocalyptic number.

It is an amenable number.

22120000000021 is a deficient number, since it is larger than the sum of its proper divisors (5950649351339).

22120000000021 is a wasteful number, since it uses less digits than its factorization.

22120000000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41038961064 (or 41038961057 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22120000000021 its reverse (12000000002122), we get a palindrome (34120000002143).

It can be divided in two parts, 22 and 120000000021, that multiplied together give a palindrome (2640000000462).

The spelling of 22120000000021 in words is "twenty-two trillion, one hundred twenty billion, twenty-one", and thus it is an aban number.