20120020112 has 20 divisors (see below), whose sum is σ = 39134229996. Its totient is φ = 10020864000.

The previous prime is 20120020111. The next prime is 20120020147. The reversal of 20120020112 is 21102002102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19716653056 + 403367056 = 140416^2 + 20084^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20120020093 and 20120020102.

It is not an unprimeable number, because it can be changed into a prime (20120020111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2442389 + ... + 2450612.

Almost surely, 2^20120020112 is an apocalyptic number.

It is an amenable number.

20120020112 is a deficient number, since it is larger than the sum of its proper divisors (19014209884).

20120020112 is a wasteful number, since it uses less digits than its factorization.

20120020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4893266 (or 4893260 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20120020112 its reverse (21102002102), we get a palindrome (41222022214).

The spelling of 20120020112 in words is "twenty billion, one hundred twenty million, twenty thousand, one hundred twelve".