222240181 has 4 divisors (see below), whose sum is σ = 223293664. Its totient is φ = 221186700.

The previous prime is 222240173. The next prime is 222240199. The reversal of 222240181 is 181042222.

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 222240181 - 2³ = 222240173 is a prime.

It is a super-2 number, since 2×222240181² = 98781396101825522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222240121) 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, 526425 + ... + 526846.

It is an arithmetic number, because the mean of its divisors is an integer number (55823416).

Almost surely, 2^222240181 is an apocalyptic number.

It is an amenable number.

222240181 is a deficient number, since it is larger than the sum of its proper divisors (1053483).

222240181 is a wasteful number, since it uses less digits than its factorization.

222240181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053482.

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 222240181 is about 14907.7221935479. The cubic root of 222240181 is about 605.7231804703.

The spelling of 222240181 in words is "two hundred twenty-two million, two hundred forty thousand, one hundred eighty-one".