12231201222 has 24 divisors (see below), whose sum is σ = 27217178976. Its totient is φ = 3966875856.

The previous prime is 12231201163. The next prime is 12231201233. The reversal of 12231201222 is 22210213221.

12231201222 is a `hidden beast` number, since 12 + 231 + 201 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12231201195 and 12231201204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9181918 + ... + 9183249.

It is an arithmetic number, because the mean of its divisors is an integer number (1134049124).

Almost surely, 2^12231201222 is an apocalyptic number.

12231201222 is an abundant number, since it is smaller than the sum of its proper divisors (14985977754).

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

12231201222 is a wasteful number, since it uses less digits than its factorization.

12231201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18365212 (or 18365209 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12231201222 its reverse (22210213221), we get a palindrome (34441414443).

The spelling of 12231201222 in words is "twelve billion, two hundred thirty-one million, two hundred one thousand, two hundred twenty-two".