222657229 has 2 divisors, whose sum is σ = 222657230. Its totient is φ = 222657228.

The previous prime is 222657223. The next prime is 222657233. The reversal of 222657229 is 922756222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151339204 + 71318025 = 12302^2 + 8445^2 .

It is a cyclic number.

It is not a de Polignac number, because 222657229 - 2⁹ = 222656717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222657223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111328614 + 111328615.

It is an arithmetic number, because the mean of its divisors is an integer number (111328615).

Almost surely, 2^222657229 is an apocalyptic number.

It is an amenable number.

222657229 is a deficient number, since it is larger than the sum of its proper divisors (1).

222657229 is an equidigital number, since it uses as much as digits as its factorization.

222657229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 222657229 is about 14921.7032874937. The cubic root of 222657229 is about 606.1018365529.

The spelling of 222657229 in words is "two hundred twenty-two million, six hundred fifty-seven thousand, two hundred twenty-nine".