12223201212 has 48 divisors (see below), whose sum is σ = 33553890720. Its totient is φ = 3834729216.

The previous prime is 12223201189. The next prime is 12223201247. The reversal of 12223201212 is 21210232221.

12223201212 is a `hidden beast` number, since 1 + 222 + 320 + 121 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3326923 + ... + 3330594.

It is an arithmetic number, because the mean of its divisors is an integer number (699039390).

Almost surely, 2^12223201212 is an apocalyptic number.

12223201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12223201212 is an abundant number, since it is smaller than the sum of its proper divisors (21330689508).

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

12223201212 is a wasteful number, since it uses less digits than its factorization.

12223201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6657547 (or 6657539 counting only the distinct ones).

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

Adding to 12223201212 its reverse (21210232221), we get a palindrome (33433433433).

The spelling of 12223201212 in words is "twelve billion, two hundred twenty-three million, two hundred one thousand, two hundred twelve".