222502981 has 4 divisors (see below), whose sum is σ = 222567264. Its totient is φ = 222438700.

The previous prime is 222502961. The next prime is 222502991. The reversal of 222502981 is 189205222.

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 222502981 - 2¹¹ = 222500933 is a prime.

It is a super-2 number, since 2×222502981² = 99015153107772722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 (222502921) 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, 26635 + ... + 33976.

It is an arithmetic number, because the mean of its divisors is an integer number (55641816).

Almost surely, 2^222502981 is an apocalyptic number.

It is an amenable number.

222502981 is a deficient number, since it is larger than the sum of its proper divisors (64283).

222502981 is an equidigital number, since it uses as much as digits as its factorization.

222502981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64282.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 222502981 is about 14916.5338131886. The cubic root of 222502981 is about 605.9618432045.

The spelling of 222502981 in words is "two hundred twenty-two million, five hundred two thousand, nine hundred eighty-one".