12121230131 has 2 divisors, whose sum is σ = 12121230132. Its totient is φ = 12121230130.

The previous prime is 12121230109. The next prime is 12121230167. The reversal of 12121230131 is 13103212121.

It is a weak prime.

It is an emirp because it is prime and its reverse (13103212121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12121230131 - 2⁶ = 12121230067 is a prime.

It is a super-2 number, since 2×12121230131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12121230181) 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 as a sum of consecutive naturals, namely, 6060615065 + 6060615066.

It is an arithmetic number, because the mean of its divisors is an integer number (6060615066).

Almost surely, 2^12121230131 is an apocalyptic number.

12121230131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121230131 is an equidigital number, since it uses as much as digits as its factorization.

12121230131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12121230131 its reverse (13103212121), we get a palindrome (25224442252).

The spelling of 12121230131 in words is "twelve billion, one hundred twenty-one million, two hundred thirty thousand, one hundred thirty-one".