12012331 has 2 divisors, whose sum is σ = 12012332. Its totient is φ = 12012330.

The previous prime is 12012289. The next prime is 12012337. The reversal of 12012331 is 13321021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12012331 - 2¹⁵ = 11979563 is a prime.

It is a super-2 number, since 2×12012331² = 288592192107122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12012337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006165 + 6006166.

It is an arithmetic number, because the mean of its divisors is an integer number (6006166).

Almost surely, 2^12012331 is an apocalyptic number.

12012331 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012331 is an equidigital number, since it uses as much as digits as its factorization.

12012331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 12012331 is about 3465.8809846848. The cubic root of 12012331 is about 229.0212409503.

Adding to 12012331 its reverse (13321021), we get a palindrome (25333352).

The spelling of 12012331 in words is "twelve million, twelve thousand, three hundred thirty-one".