12020011112 has 16 divisors (see below), whose sum is σ = 22539493860. Its totient is φ = 6009479424.

The previous prime is 12020011051. The next prime is 12020011121. The reversal of 12020011112 is 21111002021.

It can be written as a sum of positive squares in 2 ways, for example, as 8451860356 + 3568150756 = 91934^2 + 59734^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12020011093 and 12020011102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41648 + ... + 160544.

Almost surely, 2^12020011112 is an apocalyptic number.

It is an amenable number.

12020011112 is a deficient number, since it is larger than the sum of its proper divisors (10519482748).

12020011112 is a wasteful number, since it uses less digits than its factorization.

12020011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131540 (or 131536 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12020011112 its reverse (21111002021), we get a palindrome (33131013133).

Subtracting 12020011112 from its reverse (21111002021), we obtain a palindrome (9090990909).

The spelling of 12020011112 in words is "twelve billion, twenty million, eleven thousand, one hundred twelve".