1312100113212 has 36 divisors (see below), whose sum is σ = 3790511438896. Its totient is φ = 374885746560.

The previous prime is 1312100113201. The next prime is 1312100113277. The reversal of 1312100113212 is 2123110012131.

1312100113212 is a `hidden beast` number, since 131 + 210 + 0 + 1 + 1 + 321 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2603372989 + ... + 2603373492.

Almost surely, 2^{1312100113212} is an apocalyptic number.

1312100113212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312100113212 is an abundant number, since it is smaller than the sum of its proper divisors (2478411325684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312100113212 is a wasteful number, since it uses less digits than its factorization.

1312100113212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5206746498 (or 5206746493 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1312100113212 its reverse (2123110012131), we get a palindrome (3435210125343).

The spelling of 1312100113212 in words is "one trillion, three hundred twelve billion, one hundred million, one hundred thirteen thousand, two hundred twelve".