12261211 has 2 divisors, whose sum is σ = 12261212. Its totient is φ = 12261210.

The previous prime is 12261187. The next prime is 12261253. The reversal of 12261211 is 11216221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12261211 - 2¹⁵ = 12228443 is a prime.

It is not a weakly prime, because it can be changed into another prime (12261281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6130605 + 6130606.

It is an arithmetic number, because the mean of its divisors is an integer number (6130606).

Almost surely, 2^12261211 is an apocalyptic number.

12261211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12261211 is an equidigital number, since it uses as much as digits as its factorization.

12261211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48, while the sum is 16.

The square root of 12261211 is about 3501.6012051631. The cubic root of 12261211 is about 230.5921164280.

Adding to 12261211 its reverse (11216221), we get a palindrome (23477432).

The spelling of 12261211 in words is "twelve million, two hundred sixty-one thousand, two hundred eleven".