12222434225 has 12 divisors (see below), whose sum is σ = 15157356876. Its totient is φ = 9776954880.

The previous prime is 12222434219. The next prime is 12222434249. The reversal of 12222434225 is 52243422221.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 795465616 + 11426968609 = 28204^2 + 106897^2 .

It is not a de Polignac number, because 12222434225 - 2⁸ = 12222433969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 320789 + ... + 356861.

It is an arithmetic number, because the mean of its divisors is an integer number (1263113073).

Almost surely, 2^12222434225 is an apocalyptic number.

It is an amenable number.

12222434225 is a deficient number, since it is larger than the sum of its proper divisors (2934922651).

12222434225 is a wasteful number, since it uses less digits than its factorization.

12222434225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49636 (or 49631 counting only the distinct ones).

The product of its digits is 15360, while the sum is 29.

Adding to 12222434225 its reverse (52243422221), we get a palindrome (64465856446).

The spelling of 12222434225 in words is "twelve billion, two hundred twenty-two million, four hundred thirty-four thousand, two hundred twenty-five".