12231110172 has 12 divisors (see below), whose sum is σ = 28539257096. Its totient is φ = 4077036720.

The previous prime is 12231110167. The next prime is 12231110191. The reversal of 12231110172 is 27101113221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×12231110172³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509629579 + ... + 509629602.

Almost surely, 2^12231110172 is an apocalyptic number.

12231110172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12231110172 is an abundant number, since it is smaller than the sum of its proper divisors (16308146924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12231110172 is a wasteful number, since it uses less digits than its factorization.

12231110172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019259188 (or 1019259186 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 21.

Adding to 12231110172 its reverse (27101113221), we get a palindrome (39332223393).

The spelling of 12231110172 in words is "twelve billion, two hundred thirty-one million, one hundred ten thousand, one hundred seventy-two".