222312329 has 2 divisors, whose sum is σ = 222312330. Its totient is φ = 222312328.

The previous prime is 222312323. The next prime is 222312361. The reversal of 222312329 is 923213222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114982729 + 107329600 = 10723^2 + 10360^2 .

It is a cyclic number.

It is not a de Polignac number, because 222312329 - 2¹⁶ = 222246793 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222312298 and 222312307.

It is not a weakly prime, because it can be changed into another prime (222312323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111156164 + 111156165.

It is an arithmetic number, because the mean of its divisors is an integer number (111156165).

Almost surely, 2^222312329 is an apocalyptic number.

It is an amenable number.

222312329 is a deficient number, since it is larger than the sum of its proper divisors (1).

222312329 is an equidigital number, since it uses as much as digits as its factorization.

222312329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

The square root of 222312329 is about 14910.1418168977. The cubic root of 222312329 is about 605.7887206554.

The spelling of 222312329 in words is "two hundred twenty-two million, three hundred twelve thousand, three hundred twenty-nine".