1312200020111 has 4 divisors (see below), whose sum is σ = 1312501749000. Its totient is φ = 1311898291224.

The previous prime is 1312200020081. The next prime is 1312200020149. The reversal of 1312200020111 is 1110200022131.

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 1312200020111 - 2¹⁰ = 1312200019087 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 (1312200020171) 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, 150857921 + ... + 150866618.

It is an arithmetic number, because the mean of its divisors is an integer number (328125437250).

Almost surely, 2^{1312200020111} is an apocalyptic number.

1312200020111 is a deficient number, since it is larger than the sum of its proper divisors (301728889).

1312200020111 is an equidigital number, since it uses as much as digits as its factorization.

1312200020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301728888.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1312200020111 its reverse (1110200022131), we get a palindrome (2422400042242).

The spelling of 1312200020111 in words is "one trillion, three hundred twelve billion, two hundred million, twenty thousand, one hundred eleven".