12012221101331 has 16 divisors (see below), whose sum is σ = 13141725120000. Its totient is φ = 10888968955200.

The previous prime is 12012221101253. The next prime is 12012221101379. The reversal of 12012221101331 is 13310112221021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12012221101331 is a prime.

It is a super-2 number, since 2×12012221101331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012221101631) 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 15 ways as a sum of consecutive naturals, for example, 56289170 + ... + 56502168.

It is an arithmetic number, because the mean of its divisors is an integer number (821357820000).

Almost surely, 2^{12012221101331} is an apocalyptic number.

12012221101331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12012221101331 is a deficient number, since it is larger than the sum of its proper divisors (1129504018669).

12012221101331 is a wasteful number, since it uses less digits than its factorization.

12012221101331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227650.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12012221101331 its reverse (13310112221021), we get a palindrome (25322333322352).

The spelling of 12012221101331 in words is "twelve trillion, twelve billion, two hundred twenty-one million, one hundred one thousand, three hundred thirty-one".