12102221231 has 2 divisors, whose sum is σ = 12102221232. Its totient is φ = 12102221230.

The previous prime is 12102221227. The next prime is 12102221233. The reversal of 12102221231 is 13212220121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12102221231 - 2² = 12102221227 is a prime.

It is a super-2 number, since 2×12102221231² (a number of 21 digits) contains 22 as substring.

Together with 12102221233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12102221233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051110615 + 6051110616.

It is an arithmetic number, because the mean of its divisors is an integer number (6051110616).

Almost surely, 2^12102221231 is an apocalyptic number.

12102221231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102221231 is an equidigital number, since it uses as much as digits as its factorization.

12102221231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12102221231 its reverse (13212220121), we get a palindrome (25314441352).

The spelling of 12102221231 in words is "twelve billion, one hundred two million, two hundred twenty-one thousand, two hundred thirty-one".