2211131244 has 24 divisors (see below), whose sum is σ = 5896350208. Its totient is φ = 631751760.

The previous prime is 2211131227. The next prime is 2211131257. The reversal of 2211131244 is 4421311122.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2211131244.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13161412 + ... + 13161579.

Almost surely, 2^2211131244 is an apocalyptic number.

It is an amenable number.

2211131244 is an abundant number, since it is smaller than the sum of its proper divisors (3685218964).

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

2211131244 is a wasteful number, since it uses less digits than its factorization.

2211131244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26323005 (or 26323003 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 2211131244 is about 47022.6673424637. The cubic root of 2211131244 is about 1302.7812730011.

Adding to 2211131244 its reverse (4421311122), we get a palindrome (6632442366).

The spelling of 2211131244 in words is "two billion, two hundred eleven million, one hundred thirty-one thousand, two hundred forty-four".