222996997 has 2 divisors, whose sum is σ = 222996998. Its totient is φ = 222996996.

The previous prime is 222996989. The next prime is 222997001. The reversal of 222996997 is 799699222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116618401 + 106378596 = 10799^2 + 10314^2 .

It is a cyclic number.

It is not a de Polignac number, because 222996997 - 2³ = 222996989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222996967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111498498 + 111498499.

It is an arithmetic number, because the mean of its divisors is an integer number (111498499).

Almost surely, 2^222996997 is an apocalyptic number.

It is an amenable number.

222996997 is a deficient number, since it is larger than the sum of its proper divisors (1).

222996997 is an equidigital number, since it uses as much as digits as its factorization.

222996997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 55.

The square root of 222996997 is about 14933.0839748526. The cubic root of 222996997 is about 606.4099773797.

The spelling of 222996997 in words is "two hundred twenty-two million, nine hundred ninety-six thousand, nine hundred ninety-seven".