12206323172 has 12 divisors (see below), whose sum is σ = 21436548336. Its totient is φ = 6081595080.

The previous prime is 12206323139. The next prime is 12206323177. The reversal of 12206323172 is 27132360221.

It is not an unprimeable number, because it can be changed into a prime (12206323177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5390354 + ... + 5392617.

It is an arithmetic number, because the mean of its divisors is an integer number (1786379028).

Almost surely, 2^12206323172 is an apocalyptic number.

It is an amenable number.

12206323172 is a deficient number, since it is larger than the sum of its proper divisors (9230225164).

12206323172 is a wasteful number, since it uses less digits than its factorization.

12206323172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10783258 (or 10783256 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

Adding to 12206323172 its reverse (27132360221), we get a palindrome (39338683393).

The spelling of 12206323172 in words is "twelve billion, two hundred six million, three hundred twenty-three thousand, one hundred seventy-two".