222981 has 16 divisors (see below), whose sum is σ = 336960. Its totient is φ = 129920.

The previous prime is 222979. The next prime is 222991. The reversal of 222981 is 189222.

222981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222981 - 2¹ = 222979 is a prime.

It is a super-2 number, since 2×222981² = 99441052722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

222981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841 + ... + 1073.

It is an arithmetic number, because the mean of its divisors is an integer number (21060).

2²²²⁹⁸¹ is an apocalyptic number.

It is an amenable number.

222981 is a deficient number, since it is larger than the sum of its proper divisors (113979).

222981 is a wasteful number, since it uses less digits than its factorization.

222981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276.

The product of its digits is 576, while the sum is 24.

The square root of 222981 is about 472.2086403276. The cubic root of 222981 is about 60.6395476478.

It can be divided in two parts, 22 and 2981, that added together give a palindrome (3003).

The spelling of 222981 in words is "two hundred twenty-two thousand, nine hundred eighty-one".