2012313331321 has 4 divisors (see below), whose sum is σ = 2013655770000. Its totient is φ = 2010970892644.

The previous prime is 2012313331289. The next prime is 2012313331381. The reversal of 2012313331321 is 1231333132102.

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 2012313331321 - 2⁵ = 2012313331289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012313331381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671217091 + ... + 671220088.

It is an arithmetic number, because the mean of its divisors is an integer number (503413942500).

Almost surely, 2^{2012313331321} is an apocalyptic number.

It is an amenable number.

2012313331321 is a deficient number, since it is larger than the sum of its proper divisors (1342438679).

2012313331321 is a wasteful number, since it uses less digits than its factorization.

2012313331321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342438678.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 2012313331321 its reverse (1231333132102), we get a palindrome (3243646463423).

The spelling of 2012313331321 in words is "two trillion, twelve billion, three hundred thirteen million, three hundred thirty-one thousand, three hundred twenty-one".