222088181 has 4 divisors (see below), whose sum is σ = 253815072. Its totient is φ = 190361292.

The previous prime is 222088159. The next prime is 222088189. The reversal of 222088181 is 181880222.

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 222088181 - 2¹⁰ = 222087157 is a prime.

It is a super-2 number, since 2×222088181² = 98646320279777522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222088189) 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, 15863435 + ... + 15863448.

It is an arithmetic number, because the mean of its divisors is an integer number (63453768).

Almost surely, 2^222088181 is an apocalyptic number.

It is an amenable number.

222088181 is a deficient number, since it is larger than the sum of its proper divisors (31726891).

222088181 is an equidigital number, since it uses as much as digits as its factorization.

222088181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31726890.

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 222088181 is about 14902.6232925616. The cubic root of 222088181 is about 605.5850552504.

The spelling of 222088181 in words is "two hundred twenty-two million, eighty-eight thousand, one hundred eighty-one".