222397 has 4 divisors (see below), whose sum is σ = 254176. Its totient is φ = 190620.

The previous prime is 222389. The next prime is 222403. The reversal of 222397 is 793222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222397 - 2³ = 222389 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15879 + ... + 15892.

It is an arithmetic number, because the mean of its divisors is an integer number (63544).

2²²²³⁹⁷ is an apocalyptic number.

It is an amenable number.

222397 is a deficient number, since it is larger than the sum of its proper divisors (31779).

222397 is an equidigital number, since it uses as much as digits as its factorization.

222397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31778.

The product of its digits is 1512, while the sum is 25.

The square root of 222397 is about 471.5898641829. The cubic root of 222397 is about 60.5865618814.

The spelling of 222397 in words is "two hundred twenty-two thousand, three hundred ninety-seven".