222281 has 4 divisors (see below), whose sum is σ = 234000. Its totient is φ = 210564.

The previous prime is 222269. The next prime is 222289. The reversal of 222281 is 182222.

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 a de Polignac number, because none of the positive numbers 2^k-222281 is a prime.

It is a super-2 number, since 2×222281² = 98817685922, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 8 and base 12.

It is not an unprimeable number, because it can be changed into a prime (222289) 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, 5831 + ... + 5868.

It is an arithmetic number, because the mean of its divisors is an integer number (58500).

2²²²²⁸¹ is an apocalyptic number.

It is an amenable number.

222281 is a deficient number, since it is larger than the sum of its proper divisors (11719).

222281 is a wasteful number, since it uses less digits than its factorization.

222281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11718.

The product of its digits is 128, while the sum is 17.

The square root of 222281 is about 471.4668599170. The cubic root of 222281 is about 60.5760262725.

The spelling of 222281 in words is "two hundred twenty-two thousand, two hundred eighty-one".