12021020100112 has 20 divisors (see below), whose sum is σ = 23291933753196. Its totient is φ = 6010198486400.

The previous prime is 12021020099989. The next prime is 12021020100139. The reversal of 12021020100112 is 21100102012021.

It can be written as a sum of positive squares in 2 ways, for example, as 4861778043136 + 7159242056976 = 2204944^2 + 2675676^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12021020100092 and 12021020100101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19154263 + ... + 19771894.

Almost surely, 2^{12021020100112} is an apocalyptic number.

It is an amenable number.

12021020100112 is a deficient number, since it is larger than the sum of its proper divisors (11270913653084).

12021020100112 is a wasteful number, since it uses less digits than its factorization.

12021020100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38945466 (or 38945460 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12021020100112 its reverse (21100102012021), we get a palindrome (33121122112133).

The spelling of 12021020100112 in words is "twelve trillion, twenty-one billion, twenty million, one hundred thousand, one hundred twelve".