22112202101021 has 2 divisors, whose sum is σ = 22112202101022. Its totient is φ = 22112202101020.

The previous prime is 22112202100997. The next prime is 22112202101069. The reversal of 22112202101021 is 12010120221122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12134500538521 + 9977701562500 = 3483461^2 + 3158750^2 .

It is a cyclic number.

It is not a de Polignac number, because 22112202101021 - 2¹⁰ = 22112202099997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22112202101621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11056101050510 + 11056101050511.

It is an arithmetic number, because the mean of its divisors is an integer number (11056101050511).

Almost surely, 2^{22112202101021} is an apocalyptic number.

It is an amenable number.

22112202101021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22112202101021 is an equidigital number, since it uses as much as digits as its factorization.

22112202101021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22112202101021 its reverse (12010120221122), we get a palindrome (34122322322143).

The spelling of 22112202101021 in words is "twenty-two trillion, one hundred twelve billion, two hundred two million, one hundred one thousand, twenty-one".