2312012209999 has 4 divisors (see below), whose sum is σ = 2320543620640. Its totient is φ = 2303480799360.

The previous prime is 2312012209951. The next prime is 2312012210047. The reversal of 2312012209999 is 9999022102132.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2312012209951) and next prime (2312012210047).

It is a cyclic number.

It is not a de Polignac number, because 2312012209999 - 2²¹ = 2312010112847 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 (2312012200999) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4265704914 + ... + 4265705455.

It is an arithmetic number, because the mean of its divisors is an integer number (580135905160).

Almost surely, 2^{2312012209999} is an apocalyptic number.

2312012209999 is a deficient number, since it is larger than the sum of its proper divisors (8531410641).

2312012209999 is an equidigital number, since it uses as much as digits as its factorization.

2312012209999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8531410640.

The product of its (nonzero) digits is 314928, while the sum is 49.

The spelling of 2312012209999 in words is "two trillion, three hundred twelve billion, twelve million, two hundred nine thousand, nine hundred ninety-nine".