12211132311 has 24 divisors (see below), whose sum is σ = 20702876064. Its totient is φ = 6789199680.

The previous prime is 12211132291. The next prime is 12211132337. The reversal of 12211132311 is 11323111221.

12211132311 is a `hidden beast` number, since 1 + 221 + 1 + 132 + 311 = 666.

It is not a de Polignac number, because 12211132311 - 2⁵ = 12211132279 is a prime.

It is a super-2 number, since 2×12211132311² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211132511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2616960 + ... + 2621621.

It is an arithmetic number, because the mean of its divisors is an integer number (862619836).

Almost surely, 2^12211132311 is an apocalyptic number.

12211132311 is a deficient number, since it is larger than the sum of its proper divisors (8491743753).

12211132311 is a wasteful number, since it uses less digits than its factorization.

12211132311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5238631 (or 5238628 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 12211132311 its reverse (11323111221), we get a palindrome (23534243532).

The spelling of 12211132311 in words is "twelve billion, two hundred eleven million, one hundred thirty-two thousand, three hundred eleven".