12210311231 has 16 divisors (see below), whose sum is σ = 12859430400. Its totient is φ = 11571482208.

The previous prime is 12210311213. The next prime is 12210311237. The reversal of 12210311231 is 13211301221.

It is a cyclic number.

It is not a de Polignac number, because 12210311231 - 2¹⁰ = 12210310207 is a prime.

It is a super-2 number, since 2×12210311231² (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 (12210311237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1291640 + ... + 1301058.

It is an arithmetic number, because the mean of its divisors is an integer number (803714400).

Almost surely, 2^12210311231 is an apocalyptic number.

12210311231 is a deficient number, since it is larger than the sum of its proper divisors (649119169).

12210311231 is a wasteful number, since it uses less digits than its factorization.

12210311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9958.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12210311231 its reverse (13211301221), we get a palindrome (25421612452).

The spelling of 12210311231 in words is "twelve billion, two hundred ten million, three hundred eleven thousand, two hundred thirty-one".