312200111321 has 4 divisors (see below), whose sum is σ = 356800127232. Its totient is φ = 267600095412.

The previous prime is 312200111303. The next prime is 312200111341. The reversal of 312200111321 is 123111002213.

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 not a de Polignac number, because 312200111321 - 2²² = 312195917017 is a prime.

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 312200111321.

It is not an unprimeable number, because it can be changed into a prime (312200111341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22300007945 + ... + 22300007958.

It is an arithmetic number, because the mean of its divisors is an integer number (89200031808).

Almost surely, 2^312200111321 is an apocalyptic number.

It is an amenable number.

312200111321 is a deficient number, since it is larger than the sum of its proper divisors (44600015911).

312200111321 is an equidigital number, since it uses as much as digits as its factorization.

312200111321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44600015910.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 312200111321 its reverse (123111002213), we get a palindrome (435311113534).

The spelling of 312200111321 in words is "three hundred twelve billion, two hundred million, one hundred eleven thousand, three hundred twenty-one".