20001112110 has 160 divisors (see below), whose sum is σ = 64136489472. Its totient is φ = 4372885440.

The previous prime is 20001112093. The next prime is 20001112121. The reversal of 20001112110 is 1121110002.

It is a happy number.

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 = 20001112092 and 20001112101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 53725 + ... + 207095.

Almost surely, 2^20001112110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20001112110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32068244736).

20001112110 is an abundant number, since it is smaller than the sum of its proper divisors (44135377362).

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

20001112110 is a wasteful number, since it uses less digits than its factorization.

20001112110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153420 (or 153411 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20001112110 its reverse (1121110002), we get a palindrome (21122222112).

The spelling of 20001112110 in words is "twenty billion, one million, one hundred twelve thousand, one hundred ten".