222411997 has 2 divisors, whose sum is σ = 222411998. Its totient is φ = 222411996.

The previous prime is 222411883. The next prime is 222412027. The reversal of 222411997 is 799114222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190274436 + 32137561 = 13794^2 + 5669^2 .

It is a cyclic number.

It is not a de Polignac number, because 222411997 - 2⁷ = 222411869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222411197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111205998 + 111205999.

It is an arithmetic number, because the mean of its divisors is an integer number (111205999).

Almost surely, 2^222411997 is an apocalyptic number.

It is an amenable number.

222411997 is a deficient number, since it is larger than the sum of its proper divisors (1).

222411997 is an equidigital number, since it uses as much as digits as its factorization.

222411997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 37.

The square root of 222411997 is about 14913.4837311743. The cubic root of 222411997 is about 605.8792370470.

The spelling of 222411997 in words is "two hundred twenty-two million, four hundred eleven thousand, nine hundred ninety-seven".