2012220112321 has 4 divisors (see below), whose sum is σ = 2015349537712. Its totient is φ = 2009090686932.

The previous prime is 2012220112249. The next prime is 2012220112351. The reversal of 2012220112321 is 1232110222102.

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 2012220112321 - 2²¹ = 2012218015169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012220112351) 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, 1564711731 + ... + 1564713016.

It is an arithmetic number, because the mean of its divisors is an integer number (503837384428).

Almost surely, 2^{2012220112321} is an apocalyptic number.

It is an amenable number.

2012220112321 is a deficient number, since it is larger than the sum of its proper divisors (3129425391).

2012220112321 is an equidigital number, since it uses as much as digits as its factorization.

2012220112321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129425390.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2012220112321 its reverse (1232110222102), we get a palindrome (3244330334423).

The spelling of 2012220112321 in words is "two trillion, twelve billion, two hundred twenty million, one hundred twelve thousand, three hundred twenty-one".