12101113231 has 2 divisors, whose sum is σ = 12101113232. Its totient is φ = 12101113230.

The previous prime is 12101113217. The next prime is 12101113237. The reversal of 12101113231 is 13231110121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12101113231 - 2⁷ = 12101113103 is a prime.

It is a super-2 number, since 2×12101113231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12101113237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050556615 + 6050556616.

It is an arithmetic number, because the mean of its divisors is an integer number (6050556616).

Almost surely, 2^12101113231 is an apocalyptic number.

12101113231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101113231 is an equidigital number, since it uses as much as digits as its factorization.

12101113231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12101113231 its reverse (13231110121), we get a palindrome (25332223352).

The spelling of 12101113231 in words is "twelve billion, one hundred one million, one hundred thirteen thousand, two hundred thirty-one".