12120122131 has 6 divisors (see below), whose sum is σ = 13124156100. Its totient is φ = 11187804888.

The previous prime is 12120122101. The next prime is 12120122143. The reversal of 12120122131 is 13122102121.

It is not a de Polignac number, because 12120122131 - 2⁵ = 12120122099 is a prime.

It is a super-2 number, since 2×12120122131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120122101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35858181 + ... + 35858518.

It is an arithmetic number, because the mean of its divisors is an integer number (2187359350).

Almost surely, 2^12120122131 is an apocalyptic number.

12120122131 is a deficient number, since it is larger than the sum of its proper divisors (1004033969).

12120122131 is an equidigital number, since it uses as much as digits as its factorization.

12120122131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71716725 (or 71716712 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12120122131 its reverse (13122102121), we get a palindrome (25242224252).

The spelling of 12120122131 in words is "twelve billion, one hundred twenty million, one hundred twenty-two thousand, one hundred thirty-one".