12201311 has 2 divisors, whose sum is σ = 12201312. Its totient is φ = 12201310.

The previous prime is 12201283. The next prime is 12201323. The reversal of 12201311 is 11310221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12201311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12201292 and 12201301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12201331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100655 + 6100656.

It is an arithmetic number, because the mean of its divisors is an integer number (6100656).

Almost surely, 2^12201311 is an apocalyptic number.

12201311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201311 is an equidigital number, since it uses as much as digits as its factorization.

12201311 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 12201311 is about 3493.0375033773. The cubic root of 12201311 is about 230.2159974672.

Adding to 12201311 its reverse (11310221), we get a palindrome (23511532).

The spelling of 12201311 in words is "twelve million, two hundred one thousand, three hundred eleven".