12222454212 has 72 divisors (see below), whose sum is σ = 31239301184. Its totient is φ = 4028947776.

The previous prime is 12222454177. The next prime is 12222454243. The reversal of 12222454212 is 21245422221.

12222454212 is a `hidden beast` number, since 12 + 2 + 224 + 5 + 421 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3272298 + ... + 3276030.

Almost surely, 2^12222454212 is an apocalyptic number.

12222454212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12222454212 is an abundant number, since it is smaller than the sum of its proper divisors (19016846972).

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

12222454212 is a wasteful number, since it uses less digits than its factorization.

12222454212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4729 (or 4724 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

Adding to 12222454212 its reverse (21245422221), we get a palindrome (33467876433).

The spelling of 12222454212 in words is "twelve billion, two hundred twenty-two million, four hundred fifty-four thousand, two hundred twelve".