12021331112 has 48 divisors (see below), whose sum is σ = 26231837760. Its totient is φ = 5149672416.

The previous prime is 12021331109. The next prime is 12021331121. The reversal of 12021331112 is 21113312021.

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, 1079123 + ... + 1090205.

It is an arithmetic number, because the mean of its divisors is an integer number (546496620).

Almost surely, 2^12021331112 is an apocalyptic number.

It is an amenable number.

12021331112 is an abundant number, since it is smaller than the sum of its proper divisors (14210506648).

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

12021331112 is a wasteful number, since it uses less digits than its factorization.

12021331112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13870 (or 13859 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12021331112 its reverse (21113312021), we get a palindrome (33134643133).

The spelling of 12021331112 in words is "twelve billion, twenty-one million, three hundred thirty-one thousand, one hundred twelve".