12211310031 has 4 divisors (see below), whose sum is σ = 16281746712. Its totient is φ = 8140873352.

The previous prime is 12211309993. The next prime is 12211310047. The reversal of 12211310031 is 13001311221.

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 12211310031 - 2¹⁰ = 12211309007 is a prime.

It is a super-2 number, since 2×12211310031² (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 (12211310231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2035218336 + ... + 2035218341.

It is an arithmetic number, because the mean of its divisors is an integer number (4070436678).

Almost surely, 2^12211310031 is an apocalyptic number.

12211310031 is a deficient number, since it is larger than the sum of its proper divisors (4070436681).

12211310031 is an equidigital number, since it uses as much as digits as its factorization.

12211310031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4070436680.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12211310031 its reverse (13001311221), we get a palindrome (25212621252).

The spelling of 12211310031 in words is "twelve billion, two hundred eleven million, three hundred ten thousand, thirty-one".