222222229 has 4 divisors (see below), whose sum is σ = 229390720. Its totient is φ = 215053740.

The previous prime is 222222227. The next prime is 222222241. The reversal of 222222229 is 922222222.

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 222222229 - 2¹ = 222222227 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222227) 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, 3584199 + ... + 3584260.

It is an arithmetic number, because the mean of its divisors is an integer number (57347680).

Almost surely, 2^222222229 is an apocalyptic number.

It is an amenable number.

222222229 is a deficient number, since it is larger than the sum of its proper divisors (7168491).

222222229 is an equidigital number, since it uses as much as digits as its factorization.

222222229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7168490.

The product of its digits is 2304, while the sum is 25.

The square root of 222222229 is about 14907.1200773322. The cubic root of 222222229 is about 605.7068704354.

The spelling of 222222229 in words is "two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-nine".