12031211 has 2 divisors, whose sum is σ = 12031212. Its totient is φ = 12031210.

The previous prime is 12031169. The next prime is 12031219. The reversal of 12031211 is 11213021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12031211 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12031192 and 12031201.

It is not a weakly prime, because it can be changed into another prime (12031219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015605 + 6015606.

It is an arithmetic number, because the mean of its divisors is an integer number (6015606).

Almost surely, 2^12031211 is an apocalyptic number.

12031211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031211 is an equidigital number, since it uses as much as digits as its factorization.

12031211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 12031211 is about 3468.6036095236. The cubic root of 12031211 is about 229.1411637662.

Adding to 12031211 its reverse (11213021), we get a palindrome (23244232).

The spelling of 12031211 in words is "twelve million, thirty-one thousand, two hundred eleven".