222220245 has 32 divisors (see below), whose sum is σ = 395265024. Its totient is φ = 105868800.

The previous prime is 222220241. The next prime is 222220247. The reversal of 222220245 is 542022222.

It is not a de Polignac number, because 222220245 - 2² = 222220241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222220241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12336 + ... + 24425.

It is an arithmetic number, because the mean of its divisors is an integer number (12352032).

Almost surely, 2^222220245 is an apocalyptic number.

It is an amenable number.

222220245 is a deficient number, since it is larger than the sum of its proper divisors (173044779).

222220245 is a wasteful number, since it uses less digits than its factorization.

222220245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36813.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 222220245 is about 14907.0535318016. The cubic root of 222220245 is about 605.7050678464.

Adding to 222220245 its reverse (542022222), we get a palindrome (764242467).

The spelling of 222220245 in words is "two hundred twenty-two million, two hundred twenty thousand, two hundred forty-five".