12534133111 has 4 divisors (see below), whose sum is σ = 12534855424. Its totient is φ = 12533410800.

The previous prime is 12534133097. The next prime is 12534133121. The reversal of 12534133111 is 11133143521.

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 12534133111 - 2⁹ = 12534132599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12534133121) 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, 334470 + ... + 370051.

It is an arithmetic number, because the mean of its divisors is an integer number (3133713856).

Almost surely, 2^12534133111 is an apocalyptic number.

12534133111 is a deficient number, since it is larger than the sum of its proper divisors (722313).

12534133111 is an equidigital number, since it uses as much as digits as its factorization.

12534133111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722312.

The product of its digits is 1080, while the sum is 25.

Adding to 12534133111 its reverse (11133143521), we get a palindrome (23667276632).

The spelling of 12534133111 in words is "twelve billion, five hundred thirty-four million, one hundred thirty-three thousand, one hundred eleven".