12225320331 has 16 divisors (see below), whose sum is σ = 19132548864. Its totient is φ = 6797088864.

The previous prime is 12225320329. The next prime is 12225320369. The reversal of 12225320331 is 13302352221.

It is a happy number.

It is not a de Polignac number, because 12225320331 - 2¹ = 12225320329 is a prime.

It is a super-2 number, since 2×12225320331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12225320531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7866225 + ... + 7867778.

It is an arithmetic number, because the mean of its divisors is an integer number (1195784304).

Almost surely, 2^12225320331 is an apocalyptic number.

12225320331 is a deficient number, since it is larger than the sum of its proper divisors (6907228533).

12225320331 is a wasteful number, since it uses less digits than its factorization.

12225320331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15734050.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 12225320331 its reverse (13302352221), we get a palindrome (25527672552).

The spelling of 12225320331 in words is "twelve billion, two hundred twenty-five million, three hundred twenty thousand, three hundred thirty-one".