12013221331 has 2 divisors, whose sum is σ = 12013221332. Its totient is φ = 12013221330.

The previous prime is 12013221301. The next prime is 12013221361. The reversal of 12013221331 is 13312231021.

12013221331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (12013221301) and next prime (12013221361).

It is a cyclic number.

It is not a de Polignac number, because 12013221331 - 2¹³ = 12013213139 is a prime.

It is a super-2 number, since 2×12013221331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12013221299 and 12013221308.

It is not a weakly prime, because it can be changed into another prime (12013221301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006610665 + 6006610666.

It is an arithmetic number, because the mean of its divisors is an integer number (6006610666).

Almost surely, 2^12013221331 is an apocalyptic number.

12013221331 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013221331 is an equidigital number, since it uses as much as digits as its factorization.

12013221331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12013221331 its reverse (13312231021), we get a palindrome (25325452352).

The spelling of 12013221331 in words is "twelve billion, thirteen million, two hundred twenty-one thousand, three hundred thirty-one".