222222777913 has 2 divisors, whose sum is σ = 222222777914. Its totient is φ = 222222777912.

The previous prime is 222222777767. The next prime is 222222777929. The reversal of 222222777913 is 319777222222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117976449529 + 104246328384 = 343477^2 + 322872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222222777913 is a prime.

It is not a weakly prime, because it can be changed into another prime (222222777943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111111388956 + 111111388957.

It is an arithmetic number, because the mean of its divisors is an integer number (111111388957).

Almost surely, 2^222222777913 is an apocalyptic number.

It is an amenable number.

222222777913 is a deficient number, since it is larger than the sum of its proper divisors (1).

222222777913 is an equidigital number, since it uses as much as digits as its factorization.

222222777913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 592704, while the sum is 46.

The spelling of 222222777913 in words is "two hundred twenty-two billion, two hundred twenty-two million, seven hundred seventy-seven thousand, nine hundred thirteen".