222123221213 has 2 divisors, whose sum is σ = 222123221214. Its totient is φ = 222123221212.

The previous prime is 222123221191. The next prime is 222123221219. The reversal of 222123221213 is 312122321222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217844360644 + 4278860569 = 466738^2 + 65413^2 .

It is a cyclic number.

It is not a de Polignac number, because 222123221213 - 2⁶ = 222123221149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222123221219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111061610606 + 111061610607.

It is an arithmetic number, because the mean of its divisors is an integer number (111061610607).

Almost surely, 2^222123221213 is an apocalyptic number.

It is an amenable number.

222123221213 is a deficient number, since it is larger than the sum of its proper divisors (1).

222123221213 is an equidigital number, since it uses as much as digits as its factorization.

222123221213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

Adding to 222123221213 its reverse (312122321222), we get a palindrome (534245542435).

The spelling of 222123221213 in words is "two hundred twenty-two billion, one hundred twenty-three million, two hundred twenty-one thousand, two hundred thirteen".