222222245 has 16 divisors (see below), whose sum is σ = 305907840. Its totient is φ = 151808064.

The previous prime is 222222241. The next prime is 222222277. The reversal of 222222245 is 542222222.

It is a cyclic number.

It is not a de Polignac number, because 222222245 - 2² = 222222241 is a prime.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 222222245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2387 + ... + 21216.

It is an arithmetic number, because the mean of its divisors is an integer number (19119240).

Almost surely, 2^222222245 is an apocalyptic number.

It is an amenable number.

222222245 is a deficient number, since it is larger than the sum of its proper divisors (83685595).

222222245 is a wasteful number, since it uses less digits than its factorization.

222222245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23884.

The product of its digits is 2560, while the sum is 23.

The square root of 222222245 is about 14907.1206139885. The cubic root of 222222245 is about 605.7068849724.

Subtracting from 222222245 its sum of digits (23), we obtain a palindrome (222222222).

Adding to 222222245 its reverse (542222222), we get a palindrome (764444467).

The spelling of 222222245 in words is "two hundred twenty-two million, two hundred twenty-two thousand, two hundred forty-five".