222212123129 has 2 divisors, whose sum is σ = 222212123130. Its totient is φ = 222212123128.

The previous prime is 222212123071. The next prime is 222212123141. The reversal of 222212123129 is 921321212222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192964282729 + 29247840400 = 439277^2 + 171020^2 .

It is a cyclic number.

It is not a de Polignac number, because 222212123129 - 2²⁴ = 222195345913 is a prime.

It is not a weakly prime, because it can be changed into another prime (222212123429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111106061564 + 111106061565.

It is an arithmetic number, because the mean of its divisors is an integer number (111106061565).

Almost surely, 2^222212123129 is an apocalyptic number.

It is an amenable number.

222212123129 is a deficient number, since it is larger than the sum of its proper divisors (1).

222212123129 is an equidigital number, since it uses as much as digits as its factorization.

222212123129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The spelling of 222212123129 in words is "two hundred twenty-two billion, two hundred twelve million, one hundred twenty-three thousand, one hundred twenty-nine".