222951 has 4 divisors (see below), whose sum is σ = 297272. Its totient is φ = 148632.

The previous prime is 222947. The next prime is 222953. The reversal of 222951 is 159222.

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

It is not a de Polignac number, because 222951 - 2² = 222947 is a prime.

It is an Ulam number.

It is a D-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 (222953) 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, 37156 + ... + 37161.

It is an arithmetic number, because the mean of its divisors is an integer number (74318).

2²²²⁹⁵¹ is an apocalyptic number.

222951 is a deficient number, since it is larger than the sum of its proper divisors (74321).

222951 is an equidigital number, since it uses as much as digits as its factorization.

222951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74320.

The product of its digits is 360, while the sum is 21.

The square root of 222951 is about 472.1768736395. The cubic root of 222951 is about 60.6368280319.

The spelling of 222951 in words is "two hundred twenty-two thousand, nine hundred fifty-one".