222881 has 4 divisors (see below), whose sum is σ = 225072. Its totient is φ = 220692.

The previous prime is 222877. The next prime is 222883. The reversal of 222881 is 188222.

222881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 188222 = 2 ⋅94111.

It is a cyclic number.

It is not a de Polignac number, because 222881 - 2² = 222877 is a prime.

It is a super-2 number, since 2×222881² = 99351880322, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 222881.

It is not an unprimeable number, because it can be changed into a prime (222883) 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, 935 + ... + 1148.

It is an arithmetic number, because the mean of its divisors is an integer number (56268).

2²²²⁸⁸¹ is an apocalyptic number.

It is an amenable number.

222881 is a deficient number, since it is larger than the sum of its proper divisors (2191).

222881 is a wasteful number, since it uses less digits than its factorization.

222881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190.

The product of its digits is 512, while the sum is 23.

The square root of 222881 is about 472.1027430549. The cubic root of 222881 is about 60.6304813126.

The spelling of 222881 in words is "two hundred twenty-two thousand, eight hundred eighty-one".