222955181 has 4 divisors (see below), whose sum is σ = 225641472. Its totient is φ = 220268892.

The previous prime is 222955157. The next prime is 222955199. The reversal of 222955181 is 181559222.

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 222955181 - 2¹⁴ = 222938797 is a prime.

It is a super-2 number, since 2×222955181² = 99418025469485522, 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 (222955111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1343021 + ... + 1343186.

It is an arithmetic number, because the mean of its divisors is an integer number (56410368).

Almost surely, 2^222955181 is an apocalyptic number.

It is an amenable number.

222955181 is a deficient number, since it is larger than the sum of its proper divisors (2686291).

222955181 is an equidigital number, since it uses as much as digits as its factorization.

222955181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686290.

The product of its digits is 14400, while the sum is 35.

The square root of 222955181 is about 14931.6837965448. The cubic root of 222955181 is about 606.3720707036.

The spelling of 222955181 in words is "two hundred twenty-two million, nine hundred fifty-five thousand, one hundred eighty-one".