12012220321311 has 32 divisors (see below), whose sum is σ = 18372931532800. Its totient is φ = 6838405378560.

The previous prime is 12012220321253. The next prime is 12012220321337. The reversal of 12012220321311 is 11312302221021.

It is not a de Polignac number, because 12012220321311 - 2⁶ = 12012220321247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012220321811) 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 31 ways as a sum of consecutive naturals, for example, 120422925 + ... + 120522633.

It is an arithmetic number, because the mean of its divisors is an integer number (574154110400).

Almost surely, 2^{12012220321311} is an apocalyptic number.

12012220321311 is a deficient number, since it is larger than the sum of its proper divisors (6360711211489).

12012220321311 is a wasteful number, since it uses less digits than its factorization.

12012220321311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121159.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 12012220321311 its reverse (11312302221021), we get a palindrome (23324522542332).

The spelling of 12012220321311 in words is "twelve trillion, twelve billion, two hundred twenty million, three hundred twenty-one thousand, three hundred eleven".