131212133111 has 8 divisors (see below), whose sum is σ = 134075976384. Its totient is φ = 128351293920.

The previous prime is 131212133093. The next prime is 131212133137. The reversal of 131212133111 is 111331212131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131212133111 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 (131212133191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662600 + ... + 837533.

It is an arithmetic number, because the mean of its divisors is an integer number (16759497048).

Almost surely, 2^131212133111 is an apocalyptic number.

131212133111 is a deficient number, since it is larger than the sum of its proper divisors (2863843273).

131212133111 is a wasteful number, since it uses less digits than its factorization.

131212133111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502041.

The product of its digits is 108, while the sum is 20.

Adding to 131212133111 its reverse (111331212131), we get a palindrome (242543345242).

The spelling of 131212133111 in words is "one hundred thirty-one billion, two hundred twelve million, one hundred thirty-three thousand, one hundred eleven".