222479185321 has 2 divisors, whose sum is σ = 222479185322. Its totient is φ = 222479185320.

The previous prime is 222479185309. The next prime is 222479185391. The reversal of 222479185321 is 123581974222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122525201296 + 99953984025 = 350036^2 + 316155^2 .

It is a cyclic number.

It is not a de Polignac number, because 222479185321 - 2³⁵ = 188119446953 is a prime.

It is not a weakly prime, because it can be changed into another prime (222479185391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111239592660 + 111239592661.

It is an arithmetic number, because the mean of its divisors is an integer number (111239592661).

Almost surely, 2^222479185321 is an apocalyptic number.

It is an amenable number.

222479185321 is a deficient number, since it is larger than the sum of its proper divisors (1).

222479185321 is an equidigital number, since it uses as much as digits as its factorization.

222479185321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 46.

The spelling of 222479185321 in words is "two hundred twenty-two billion, four hundred seventy-nine million, one hundred eighty-five thousand, three hundred twenty-one".