12220120131 has 4 divisors (see below), whose sum is σ = 16293493512. Its totient is φ = 8146746752.

The previous prime is 12220120127. The next prime is 12220120139. The reversal of 12220120131 is 13102102221.

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 12220120131 - 2² = 12220120127 is a prime.

It is a super-2 number, since 2×12220120131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12220120131.

It is not an unprimeable number, because it can be changed into a prime (12220120139) 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, 2036686686 + ... + 2036686691.

It is an arithmetic number, because the mean of its divisors is an integer number (4073373378).

Almost surely, 2^12220120131 is an apocalyptic number.

12220120131 is a deficient number, since it is larger than the sum of its proper divisors (4073373381).

12220120131 is an equidigital number, since it uses as much as digits as its factorization.

12220120131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4073373380.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12220120131 its reverse (13102102221), we get a palindrome (25322222352).

The spelling of 12220120131 in words is "twelve billion, two hundred twenty million, one hundred twenty thousand, one hundred thirty-one".