12012221100331 has 4 divisors (see below), whose sum is σ = 12030902626792. Its totient is φ = 11993539573872.

The previous prime is 12012221100323. The next prime is 12012221100391. The reversal of 12012221100331 is 13300112221021.

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

It is a cyclic number.

It is not a de Polignac number, because 12012221100331 - 2³ = 12012221100323 is a prime.

It is a super-2 number, since 2×12012221100331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012221100299 and 12012221100308.

It is not an unprimeable number, because it can be changed into a prime (12012221100391) 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 3 ways as a sum of consecutive naturals, for example, 9340762266 + ... + 9340763551.

It is an arithmetic number, because the mean of its divisors is an integer number (3007725656698).

Almost surely, 2^{12012221100331} is an apocalyptic number.

12012221100331 is a deficient number, since it is larger than the sum of its proper divisors (18681526461).

12012221100331 is an equidigital number, since it uses as much as digits as its factorization.

12012221100331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18681526460.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12012221100331 its reverse (13300112221021), we get a palindrome (25312333321352).

The spelling of 12012221100331 in words is "twelve trillion, twelve billion, two hundred twenty-one million, one hundred thousand, three hundred thirty-one".