12221225112 has 16 divisors (see below), whose sum is σ = 30553062840. Its totient is φ = 4073741696.

The previous prime is 12221225111. The next prime is 12221225117. The reversal of 12221225112 is 21152212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221225111) 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, 254608833 + ... + 254608880.

Almost surely, 2^12221225112 is an apocalyptic number.

12221225112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12221225112 is an abundant number, since it is smaller than the sum of its proper divisors (18331837728).

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

12221225112 is a wasteful number, since it uses less digits than its factorization.

12221225112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509217722 (or 509217718 counting only the distinct ones).

The product of its digits is 320, while the sum is 21.

Adding to 12221225112 its reverse (21152212221), we get a palindrome (33373437333).

The spelling of 12221225112 in words is "twelve billion, two hundred twenty-one million, two hundred twenty-five thousand, one hundred twelve".