12222203131 has 4 divisors (see below), whose sum is σ = 12865477000. Its totient is φ = 11578929264.

The previous prime is 12222203117. The next prime is 12222203137. The reversal of 12222203131 is 13130222221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12222203131 - 2⁵ = 12222203099 is a prime.

It is a super-2 number, since 2×12222203131² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 643273849 = 12222203131 / (1 + 2 + 2 + 2 + 2 + 2 + 0 + 3 + 1 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12222203099 and 12222203108.

It is not an unprimeable number, because it can be changed into a prime (12222203137) 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, 321636906 + ... + 321636943.

It is an arithmetic number, because the mean of its divisors is an integer number (3216369250).

Almost surely, 2^12222203131 is an apocalyptic number.

12222203131 is a deficient number, since it is larger than the sum of its proper divisors (643273869).

12222203131 is an equidigital number, since it uses as much as digits as its factorization.

12222203131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643273868.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12222203131 its reverse (13130222221), we get a palindrome (25352425352).

The spelling of 12222203131 in words is "twelve billion, two hundred twenty-two million, two hundred three thousand, one hundred thirty-one".