22040220452 has 12 divisors (see below), whose sum is σ = 40839232140. Its totient is φ = 10371868416.

The previous prime is 22040220451. The next prime is 22040220479. The reversal of 22040220452 is 25402204022.

It can be written as a sum of positive squares in 2 ways, for example, as 18816706276 + 3223514176 = 137174^2 + 56776^2 .

It is not an unprimeable number, because it can be changed into a prime (22040220451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162060377 + ... + 162060512.

It is an arithmetic number, because the mean of its divisors is an integer number (3403269345).

Almost surely, 2^22040220452 is an apocalyptic number.

It is an amenable number.

22040220452 is a deficient number, since it is larger than the sum of its proper divisors (18799011688).

22040220452 is a wasteful number, since it uses less digits than its factorization.

22040220452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324120910 (or 324120908 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

Adding to 22040220452 its reverse (25402204022), we get a palindrome (47442424474).

The spelling of 22040220452 in words is "twenty-two billion, forty million, two hundred twenty thousand, four hundred fifty-two".