20002001112 has 128 divisors (see below), whose sum is σ = 56629728000. Its totient is φ = 6539616000.

The previous prime is 20002001093. The next prime is 20002001113. The reversal of 20002001112 is 21110020002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20002001094 and 20002001103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002001113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6663612 + ... + 6666612.

It is an arithmetic number, because the mean of its divisors is an integer number (442419750).

Almost surely, 2^20002001112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20002001112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28314864000).

20002001112 is an abundant number, since it is smaller than the sum of its proper divisors (36627726888).

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

20002001112 is a wasteful number, since it uses less digits than its factorization.

20002001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3598 (or 3588 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20002001112 its reverse (21110020002), we get a palindrome (41112021114).

The spelling of 20002001112 in words is "twenty billion, two million, one thousand, one hundred twelve".