12231133 has 2 divisors, whose sum is σ = 12231134. Its totient is φ = 12231132.

The previous prime is 12231083. The next prime is 12231157. The reversal of 12231133 is 33113221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9498724 + 2732409 = 3082^2 + 1653^2 .

It is an emirp because it is prime and its reverse (33113221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12231133 - 2¹³ = 12222941 is a prime.

It is a super-2 number, since 2×12231133² = 299201228927378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12231433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115566 + 6115567.

It is an arithmetic number, because the mean of its divisors is an integer number (6115567).

Almost surely, 2^12231133 is an apocalyptic number.

It is an amenable number.

12231133 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231133 is an equidigital number, since it uses as much as digits as its factorization.

12231133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108, while the sum is 16.

The square root of 12231133 is about 3497.3036756907. The cubic root of 12231133 is about 230.4034067160.

Adding to 12231133 its reverse (33113221), we get a palindrome (45344354).

The spelling of 12231133 in words is "twelve million, two hundred thirty-one thousand, one hundred thirty-three".