22122110002021 has 4 divisors (see below), whose sum is σ = 22254577726752. Its totient is φ = 21989642277292.

The previous prime is 22122110001983. The next prime is 22122110002117. The reversal of 22122110002021 is 12020001122122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22122110002021 - 2¹³ = 22122109993829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22122110001986 and 22122110002004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122110002621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66233862115 + ... + 66233862448.

It is an arithmetic number, because the mean of its divisors is an integer number (5563644431688).

Almost surely, 2^{22122110002021} is an apocalyptic number.

It is an amenable number.

22122110002021 is a deficient number, since it is larger than the sum of its proper divisors (132467724731).

22122110002021 is a wasteful number, since it uses less digits than its factorization.

22122110002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132467724730.

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

Adding to 22122110002021 its reverse (12020001122122), we get a palindrome (34142111124143).

The spelling of 22122110002021 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred ten million, two thousand, twenty-one".