12111310100131 has 4 divisors (see below), whose sum is σ = 13212338291064. Its totient is φ = 11010281909200.

The previous prime is 12111310100117. The next prime is 12111310100143. The reversal of 12111310100131 is 13100101311121.

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 12111310100131 - 2¹³ = 12111310091939 is a prime.

It is a super-2 number, since 2×12111310100131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12111310100431) 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, 550514095450 + ... + 550514095471.

It is an arithmetic number, because the mean of its divisors is an integer number (3303084572766).

Almost surely, 2^{12111310100131} is an apocalyptic number.

12111310100131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12111310100131 is a deficient number, since it is larger than the sum of its proper divisors (1101028190933).

12111310100131 is a wasteful number, since it uses less digits than its factorization.

12111310100131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101028190932.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 12111310100131 its reverse (13100101311121), we get a palindrome (25211411411252).

The spelling of 12111310100131 in words is "twelve trillion, one hundred eleven billion, three hundred ten million, one hundred thousand, one hundred thirty-one".