222122111213 has 2 divisors, whose sum is σ = 222122111214. Its totient is φ = 222122111212.

The previous prime is 222122111203. The next prime is 222122111261. The reversal of 222122111213 is 312111221222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221655464809 + 466646404 = 470803^2 + 21602^2 .

It is a cyclic number.

It is not a de Polignac number, because 222122111213 - 2¹⁸ = 222121849069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222122111203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111061055606 + 111061055607.

It is an arithmetic number, because the mean of its divisors is an integer number (111061055607).

Almost surely, 2^222122111213 is an apocalyptic number.

It is an amenable number.

222122111213 is a deficient number, since it is larger than the sum of its proper divisors (1).

222122111213 is an equidigital number, since it uses as much as digits as its factorization.

222122111213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 20.

Adding to 222122111213 its reverse (312111221222), we get a palindrome (534233332435).

The spelling of 222122111213 in words is "two hundred twenty-two billion, one hundred twenty-two million, one hundred eleven thousand, two hundred thirteen".