12011212213331 has 2 divisors, whose sum is σ = 12011212213332. Its totient is φ = 12011212213330.

The previous prime is 12011212213289. The next prime is 12011212213369. The reversal of 12011212213331 is 13331221211021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12011212213331 - 2⁶ = 12011212213267 is a prime.

It is a super-2 number, since 2×12011212213331² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12011212213297 and 12011212213306.

It is not a weakly prime, because it can be changed into another prime (12011212213831) 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 as a sum of consecutive naturals, namely, 6005606106665 + 6005606106666.

It is an arithmetic number, because the mean of its divisors is an integer number (6005606106666).

Almost surely, 2^{12011212213331} is an apocalyptic number.

12011212213331 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011212213331 is an equidigital number, since it uses as much as digits as its factorization.

12011212213331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12011212213331 its reverse (13331221211021), we get a palindrome (25342433424352).

The spelling of 12011212213331 in words is "twelve trillion, eleven billion, two hundred twelve million, two hundred thirteen thousand, three hundred thirty-one".