2211265156 has 12 divisors (see below), whose sum is σ = 3909608668. Its totient is φ = 1094234112.

The previous prime is 2211265139. The next prime is 2211265171. The reversal of 2211265156 is 6515621122.

It can be written as a sum of positive squares in 2 ways, for example, as 1224300100 + 986965056 = 34990^2 + 31416^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2849181 + ... + 2849956.

Almost surely, 2^2211265156 is an apocalyptic number.

It is an amenable number.

2211265156 is a deficient number, since it is larger than the sum of its proper divisors (1698343512).

2211265156 is a wasteful number, since it uses less digits than its factorization.

2211265156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5699238 (or 5699236 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The square root of 2211265156 is about 47024.0912299217. The cubic root of 2211265156 is about 1302.8075724386.

Adding to 2211265156 its reverse (6515621122), we get a palindrome (8726886278).

The spelling of 2211265156 in words is "two billion, two hundred eleven million, two hundred sixty-five thousand, one hundred fifty-six".