22021222212113 has 2 divisors, whose sum is σ = 22021222212114. Its totient is φ = 22021222212112.

The previous prime is 22021222212089. The next prime is 22021222212229. The reversal of 22021222212113 is 31121222212022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18533860179409 + 3487362032704 = 4305097^2 + 1867448^2 .

It is a cyclic number.

It is not a de Polignac number, because 22021222212113 - 2¹⁴ = 22021222195729 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22021222212413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010611106056 + 11010611106057.

It is an arithmetic number, because the mean of its divisors is an integer number (11010611106057).

Almost surely, 2^{22021222212113} is an apocalyptic number.

It is an amenable number.

22021222212113 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021222212113 is an equidigital number, since it uses as much as digits as its factorization.

22021222212113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 22021222212113 its reverse (31121222212022), we get a palindrome (53142444424135).

Subtracting 22021222212113 from its reverse (31121222212022), we obtain a palindrome (9099999999909).

The spelling of 22021222212113 in words is "twenty-two trillion, twenty-one billion, two hundred twenty-two million, two hundred twelve thousand, one hundred thirteen".