12102211231 has 16 divisors (see below), whose sum is σ = 13831388928. Its totient is φ = 10481680000.

The previous prime is 12102211229. The next prime is 12102211237. The reversal of 12102211231 is 13211220121.

It is not a de Polignac number, because 12102211231 - 2¹ = 12102211229 is a prime.

It is a super-2 number, since 2×12102211231² (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 (12102211237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31786 + ... + 158791.

It is an arithmetic number, because the mean of its divisors is an integer number (864461808).

Almost surely, 2^12102211231 is an apocalyptic number.

12102211231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12102211231 is a deficient number, since it is larger than the sum of its proper divisors (1729177697).

12102211231 is a wasteful number, since it uses less digits than its factorization.

12102211231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190862.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12102211231 its reverse (13211220121), we get a palindrome (25313431352).

The spelling of 12102211231 in words is "twelve billion, one hundred two million, two hundred eleven thousand, two hundred thirty-one".