2012220231311 has 4 divisors (see below), whose sum is σ = 2027580691224. Its totient is φ = 1996859771400.

The previous prime is 2012220231293. The next prime is 2012220231323. The reversal of 2012220231311 is 1131320222102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012220231311 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 (2012220231361) 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, 7680229760 + ... + 7680230021.

It is an arithmetic number, because the mean of its divisors is an integer number (506895172806).

Almost surely, 2^{2012220231311} is an apocalyptic number.

2012220231311 is a deficient number, since it is larger than the sum of its proper divisors (15360459913).

2012220231311 is a wasteful number, since it uses less digits than its factorization.

2012220231311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15360459912.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2012220231311 its reverse (1131320222102), we get a palindrome (3143540453413).

The spelling of 2012220231311 in words is "two trillion, twelve billion, two hundred twenty million, two hundred thirty-one thousand, three hundred eleven".