22271312272 has 30 divisors (see below), whose sum is σ = 47430076694. Its totient is φ = 10123322880.

The previous prime is 22271312249. The next prime is 22271312291. The reversal of 22271312272 is 27221317222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21739733136 + 531579136 = 147444^2 + 23056^2 .

It is a super-2 number, since 2×22271312272² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5749953 + ... + 5753824.

Almost surely, 2^22271312272 is an apocalyptic number.

22271312272 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22271312272 is an abundant number, since it is smaller than the sum of its proper divisors (25158764422).

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

22271312272 is a wasteful number, since it uses less digits than its factorization.

22271312272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11503807 (or 11503790 counting only the distinct ones).

The product of its digits is 9408, while the sum is 31.

Adding to 22271312272 its reverse (27221317222), we get a palindrome (49492629494).

The spelling of 22271312272 in words is "twenty-two billion, two hundred seventy-one million, three hundred twelve thousand, two hundred seventy-two".