12211132291 has 2 divisors, whose sum is σ = 12211132292. Its totient is φ = 12211132290.

The previous prime is 12211132289. The next prime is 12211132337. The reversal of 12211132291 is 19223111221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12211132291 - 2¹ = 12211132289 is a prime.

It is a super-2 number, since 2×12211132291² (a number of 21 digits) contains 22 as substring.

Together with 12211132289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12211132201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105566145 + 6105566146.

It is an arithmetic number, because the mean of its divisors is an integer number (6105566146).

Almost surely, 2^12211132291 is an apocalyptic number.

12211132291 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211132291 is an equidigital number, since it uses as much as digits as its factorization.

12211132291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 25.

The spelling of 12211132291 in words is "twelve billion, two hundred eleven million, one hundred thirty-two thousand, two hundred ninety-one".