222961 has 4 divisors (see below), whose sum is σ = 226800. Its totient is φ = 219124.

The previous prime is 222953. The next prime is 222967. The reversal of 222961 is 169222.

It is a happy number.

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 222961 - 2³ = 222953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222967) 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, 1831 + ... + 1948.

It is an arithmetic number, because the mean of its divisors is an integer number (56700).

2²²²⁹⁶¹ is an apocalyptic number.

It is an amenable number.

222961 is a deficient number, since it is larger than the sum of its proper divisors (3839).

222961 is an equidigital number, since it uses as much as digits as its factorization.

222961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838.

The product of its digits is 432, while the sum is 22.

The square root of 222961 is about 472.1874627730. The cubic root of 222961 is about 60.6377345977.

The spelling of 222961 in words is "two hundred twenty-two thousand, nine hundred sixty-one".