12122112231 has 12 divisors (see below), whose sum is σ = 17520230520. Its totient is φ = 8076556080.

The previous prime is 12122112221. The next prime is 12122112269. The reversal of 12122112231 is 13221122121.

It is not a de Polignac number, because 12122112231 - 2⁹ = 12122111719 is a prime.

It is a super-2 number, since 2×12122112231² (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 (12122112221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 388485 + ... + 418526.

It is an arithmetic number, because the mean of its divisors is an integer number (1460019210).

Almost surely, 2^12122112231 is an apocalyptic number.

12122112231 is a deficient number, since it is larger than the sum of its proper divisors (5398118289).

12122112231 is a wasteful number, since it uses less digits than its factorization.

12122112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808686 (or 808683 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 12122112231 its reverse (13221122121), we get a palindrome (25343234352).

The spelling of 12122112231 in words is "twelve billion, one hundred twenty-two million, one hundred twelve thousand, two hundred thirty-one".