221022102221213 has 2 divisors, whose sum is σ = 221022102221214. Its totient is φ = 221022102221212.

The previous prime is 221022102221149. The next prime is 221022102221269. The reversal of 221022102221213 is 312122201220122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152640415881529 + 68381686339684 = 12354773^2 + 8269322^2 .

It is a cyclic number.

It is not a de Polignac number, because 221022102221213 - 2⁶ = 221022102221149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221022102221413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110511051110606 + 110511051110607.

It is an arithmetic number, because the mean of its divisors is an integer number (110511051110607).

Almost surely, 2^{221022102221213} is an apocalyptic number.

It is an amenable number.

221022102221213 is a deficient number, since it is larger than the sum of its proper divisors (1).

221022102221213 is an equidigital number, since it uses as much as digits as its factorization.

221022102221213 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 221022102221213 its reverse (312122201220122), we get a palindrome (533144303441335).

The spelling of 221022102221213 in words is "two hundred twenty-one trillion, twenty-two billion, one hundred two million, two hundred twenty-one thousand, two hundred thirteen".