222113122130021 has 2 divisors, whose sum is σ = 222113122130022. Its totient is φ = 222113122130020.

The previous prime is 222113122129999. The next prime is 222113122130033. The reversal of 222113122130021 is 120031221311222.

222113122130021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130931057985121 + 91182064144900 = 11442511^2 + 9548930^2 .

It is a cyclic number.

It is not a de Polignac number, because 222113122130021 - 2²² = 222113117935717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222113122130821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111056561065010 + 111056561065011.

It is an arithmetic number, because the mean of its divisors is an integer number (111056561065011).

Almost surely, 2^{222113122130021} is an apocalyptic number.

It is an amenable number.

222113122130021 is a deficient number, since it is larger than the sum of its proper divisors (1).

222113122130021 is an equidigital number, since it uses as much as digits as its factorization.

222113122130021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 222113122130021 its reverse (120031221311222), we get a palindrome (342144343441243).

The spelling of 222113122130021 in words is "two hundred twenty-two trillion, one hundred thirteen billion, one hundred twenty-two million, one hundred thirty thousand, twenty-one".