2211261272 has 16 divisors (see below), whose sum is σ = 4523034600. Its totient is φ = 1005118720.

The previous prime is 2211261191. The next prime is 2211261293. The reversal of 2211261272 is 2721621122.

It is a congruent number.

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, 12563897 + ... + 12564072.

Almost surely, 2^2211261272 is an apocalyptic number.

2211261272 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2211261272 is an abundant number, since it is smaller than the sum of its proper divisors (2311773328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2211261272 is a wasteful number, since it uses less digits than its factorization.

2211261272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25127986 (or 25127982 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 2211261272 is about 47024.0499319231. The cubic root of 2211261272 is about 1302.8068096615.

Adding to 2211261272 its reverse (2721621122), we get a palindrome (4932882394).

The spelling of 2211261272 in words is "two billion, two hundred eleven million, two hundred sixty-one thousand, two hundred seventy-two".