1312200021133 has 4 divisors (see below), whose sum is σ = 1381263180160. Its totient is φ = 1243136862108.

The previous prime is 1312200021107. The next prime is 1312200021151. The reversal of 1312200021133 is 3311200022131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312200021133 is a prime.

It is a super-2 number, since 2×1312200021133² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 69063159007 = 1312200021133 / (1 + 3 + 1 + 2 + 2 + 0 + 0 + 0 + 2 + 1 + 1 + 3 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312200021133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312200021173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34531579485 + ... + 34531579522.

It is an arithmetic number, because the mean of its divisors is an integer number (345315795040).

Almost surely, 2^{1312200021133} is an apocalyptic number.

It is an amenable number.

1312200021133 is a deficient number, since it is larger than the sum of its proper divisors (69063159027).

1312200021133 is an equidigital number, since it uses as much as digits as its factorization.

1312200021133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69063159026.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1312200021133 its reverse (3311200022131), we get a palindrome (4623400043264).

The spelling of 1312200021133 in words is "one trillion, three hundred twelve billion, two hundred million, twenty-one thousand, one hundred thirty-three".