222221200122137 has 2 divisors, whose sum is σ = 222221200122138. Its totient is φ = 222221200122136.

The previous prime is 222221200122043. The next prime is 222221200122143. The reversal of 222221200122137 is 731221002122222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204131056053136 + 18090144069001 = 14287444^2 + 4253251^2 .

It is a cyclic number.

It is not a de Polignac number, because 222221200122137 - 2²⁸ = 222220931686681 is a prime.

It is a super-2 number, since 2×222221200122137² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222221200122737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110600061068 + 111110600061069.

It is an arithmetic number, because the mean of its divisors is an integer number (111110600061069).

Almost surely, 2^{222221200122137} is an apocalyptic number.

It is an amenable number.

222221200122137 is a deficient number, since it is larger than the sum of its proper divisors (1).

222221200122137 is an equidigital number, since it uses as much as digits as its factorization.

222221200122137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 29.

Adding to 222221200122137 its reverse (731221002122222), we get a palindrome (953442202244359).

The spelling of 222221200122137 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two hundred million, one hundred twenty-two thousand, one hundred thirty-seven".