12213331212 has 24 divisors (see below), whose sum is σ = 28504840000. Its totient is φ = 4070100816.

The previous prime is 12213331189. The next prime is 12213331231. The reversal of 12213331212 is 21213331221.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74962 + ... + 173337.

Almost surely, 2^12213331212 is an apocalyptic number.

12213331212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12213331212 is an abundant number, since it is smaller than the sum of its proper divisors (16291508788).

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

12213331212 is a wasteful number, since it uses less digits than its factorization.

12213331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252405 (or 252403 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 12213331212 its reverse (21213331221), we get a palindrome (33426662433).

Subtracting 12213331212 from its reverse (21213331221), we obtain a palindrome (9000000009).

The spelling of 12213331212 in words is "twelve billion, two hundred thirteen million, three hundred thirty-one thousand, two hundred twelve".