2220042245 has 4 divisors (see below), whose sum is σ = 2664050700. Its totient is φ = 1776033792.

The previous prime is 2220042241. The next prime is 2220042269. The reversal of 2220042245 is 5422400222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1355270596 + 864771649 = 36814^2 + 29407^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220042245 - 2² = 2220042241 is a prime.

It is a super-3 number, since 3×2220042245³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2220042245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220042241) 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, 222004220 + ... + 222004229.

It is an arithmetic number, because the mean of its divisors is an integer number (666012675).

Almost surely, 2^2220042245 is an apocalyptic number.

It is an amenable number.

2220042245 is a deficient number, since it is larger than the sum of its proper divisors (444008455).

2220042245 is an equidigital number, since it uses as much as digits as its factorization.

2220042245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444008454.

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

The square root of 2220042245 is about 47117.3242555220. The cubic root of 2220042245 is about 1304.5290246645.

Adding to 2220042245 its reverse (5422400222), we get a palindrome (7642442467).

The spelling of 2220042245 in words is "two billion, two hundred twenty million, forty-two thousand, two hundred forty-five".