2222531272 has 64 divisors (see below), whose sum is σ = 4543484400. Its totient is φ = 1013145600.

The previous prime is 2222531263. The next prime is 2222531273. The reversal of 2222531272 is 2721352222.

It can be written as a sum of positive squares in 8 ways, for example, as 1227381156 + 995150116 = 35034^2 + 31546^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2222531272.

It is not an unprimeable number, because it can be changed into a prime (2222531273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5542272 + ... + 5542672.

Almost surely, 2^2222531272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2222531272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2271742200).

2222531272 is an abundant number, since it is smaller than the sum of its proper divisors (2320953128).

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

2222531272 is a wasteful number, since it uses less digits than its factorization.

2222531272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946 (or 942 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 2222531272 is about 47143.7299330462. The cubic root of 2222531272 is about 1305.0163720342.

Adding to 2222531272 its reverse (2721352222), we get a palindrome (4943883494).

The spelling of 2222531272 in words is "two billion, two hundred twenty-two million, five hundred thirty-one thousand, two hundred seventy-two".