12102011112 has 32 divisors (see below), whose sum is σ = 31298306400. Its totient is φ = 3894899904.

The previous prime is 12102011101. The next prime is 12102011137. The reversal of 12102011112 is 21111020121.

It is a super-3 number, since 3×12102011112³ (a number of 31 digits) contains 333 as substring.

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

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, 8693278 + ... + 8694669.

It is an arithmetic number, because the mean of its divisors is an integer number (978072075).

Almost surely, 2^12102011112 is an apocalyptic number.

12102011112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12102011112 is an abundant number, since it is smaller than the sum of its proper divisors (19196295288).

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

12102011112 is a wasteful number, since it uses less digits than its factorization.

12102011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17387985 (or 17387981 counting only the distinct ones).

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

Adding to 12102011112 its reverse (21111020121), we get a palindrome (33213031233).

Subtracting 12102011112 from its reverse (21111020121), we obtain a palindrome (9009009009).

The spelling of 12102011112 in words is "twelve billion, one hundred two million, eleven thousand, one hundred twelve".