12021110112 has 48 divisors (see below), whose sum is σ = 34424091072. Its totient is φ = 3642760320.

The previous prime is 12021110081. The next prime is 12021110137. The reversal of 12021110112 is 21101112021.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

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, 5690758 + ... + 5692869.

It is an arithmetic number, because the mean of its divisors is an integer number (717168564).

Almost surely, 2^12021110112 is an apocalyptic number.

12021110112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12021110112 is an abundant number, since it is smaller than the sum of its proper divisors (22402980960).

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

12021110112 is a wasteful number, since it uses less digits than its factorization.

12021110112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11383651 (or 11383643 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12021110112 its reverse (21101112021), we get a palindrome (33122222133).

The spelling of 12021110112 in words is "twelve billion, twenty-one million, one hundred ten thousand, one hundred twelve".