22112022221021 has 2 divisors, whose sum is σ = 22112022221022. Its totient is φ = 22112022221020.

The previous prime is 22112022221011. The next prime is 22112022221083. The reversal of 22112022221021 is 12012222021122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19217307900025 + 2894714320996 = 4383755^2 + 1701386^2 .

It is a cyclic number.

It is not a de Polignac number, because 22112022221021 - 2²⁶ = 22111955112157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22112022220984 and 22112022221002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22112022221011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11056011110510 + 11056011110511.

It is an arithmetic number, because the mean of its divisors is an integer number (11056011110511).

Almost surely, 2^{22112022221021} is an apocalyptic number.

It is an amenable number.

22112022221021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22112022221021 is an equidigital number, since it uses as much as digits as its factorization.

22112022221021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22112022221021 its reverse (12012222021122), we get a palindrome (34124244242143).

The spelling of 22112022221021 in words is "twenty-two trillion, one hundred twelve billion, twenty-two million, two hundred twenty-one thousand, twenty-one".