12211110131 has 4 divisors (see below), whose sum is σ = 13321211064. Its totient is φ = 11101009200.

The previous prime is 12211110089. The next prime is 12211110139. The reversal of 12211110131 is 13101111221.

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 12211110131 - 2²⁶ = 12144001267 is a prime.

It is a super-2 number, since 2×12211110131² (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 (12211110139) 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, 555050450 + ... + 555050471.

It is an arithmetic number, because the mean of its divisors is an integer number (3330302766).

Almost surely, 2^12211110131 is an apocalyptic number.

12211110131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12211110131 is a deficient number, since it is larger than the sum of its proper divisors (1110100933).

12211110131 is a wasteful number, since it uses less digits than its factorization.

12211110131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110100932.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 12211110131 its reverse (13101111221), we get a palindrome (25312221352).

The spelling of 12211110131 in words is "twelve billion, two hundred eleven million, one hundred ten thousand, one hundred thirty-one".