2261222265 has 32 divisors (see below), whose sum is σ = 3642731136. Its totient is φ = 1197757440.

The previous prime is 2261222153. The next prime is 2261222267. The reversal of 2261222265 is 5622221622.

2261222265 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2261222265 - 2¹¹ = 2261220217 is a prime.

It is a super-2 number, since 2×2261222265² = 10226252263463460450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2261222267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2012994 + ... + 2014116.

It is an arithmetic number, because the mean of its divisors is an integer number (113835348).

Almost surely, 2^2261222265 is an apocalyptic number.

It is an amenable number.

2261222265 is a deficient number, since it is larger than the sum of its proper divisors (1381508871).

2261222265 is a wasteful number, since it uses less digits than its factorization.

2261222265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929.

The product of its digits is 11520, while the sum is 30.

The square root of 2261222265 is about 47552.3108271302. The cubic root of 2261222265 is about 1312.5456521082.

Adding to 2261222265 its reverse (5622221622), we get a palindrome (7883443887).

The spelling of 2261222265 in words is "two billion, two hundred sixty-one million, two hundred twenty-two thousand, two hundred sixty-five".