222997 has 4 divisors (see below), whose sum is σ = 224460. Its totient is φ = 221536.

The previous prime is 222991. The next prime is 223007. The reversal of 222997 is 799222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 192721 + 30276 = 439^2 + 174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222997 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472 + ... + 817.

It is an arithmetic number, because the mean of its divisors is an integer number (56115).

2²²²⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

222997 is a deficient number, since it is larger than the sum of its proper divisors (1463).

222997 is a wasteful number, since it uses less digits than its factorization.

222997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462.

The product of its digits is 4536, while the sum is 31.

The square root of 222997 is about 472.2255816874. The cubic root of 222997 is about 60.6409980099.

The spelling of 222997 in words is "two hundred twenty-two thousand, nine hundred ninety-seven".