12211103131 has 4 divisors (see below), whose sum is σ = 12216321664. Its totient is φ = 12205884600.

The previous prime is 12211103089. The next prime is 12211103227. The reversal of 12211103131 is 13130111221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12211103131 - 2²⁵ = 12177548699 is a prime.

It is a super-2 number, since 2×12211103131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211103231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2605755 + ... + 2610436.

It is an arithmetic number, because the mean of its divisors is an integer number (3054080416).

Almost surely, 2^12211103131 is an apocalyptic number.

12211103131 is a deficient number, since it is larger than the sum of its proper divisors (5218533).

12211103131 is an equidigital number, since it uses as much as digits as its factorization.

12211103131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5218532.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12211103131 its reverse (13130111221), we get a palindrome (25341214352).

The spelling of 12211103131 in words is "twelve billion, two hundred eleven million, one hundred three thousand, one hundred thirty-one".