12131400111 has 4 divisors (see below), whose sum is σ = 16175200152. Its totient is φ = 8087600072.

The previous prime is 12131400059. The next prime is 12131400121. The reversal of 12131400111 is 11100413121.

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 12131400111 - 2¹³ = 12131391919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131400121) 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, 2021900016 + ... + 2021900021.

It is an arithmetic number, because the mean of its divisors is an integer number (4043800038).

Almost surely, 2^12131400111 is an apocalyptic number.

12131400111 is a deficient number, since it is larger than the sum of its proper divisors (4043800041).

12131400111 is an equidigital number, since it uses as much as digits as its factorization.

12131400111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043800040.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12131400111 its reverse (11100413121), we get a palindrome (23231813232).

The spelling of 12131400111 in words is "twelve billion, one hundred thirty-one million, four hundred thousand, one hundred eleven".