20001119112 has 96 divisors (see below), whose sum is σ = 58404790080. Its totient is φ = 6146997120.

The previous prime is 20001119111. The next prime is 20001119161. The reversal of 20001119112 is 21191110002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20001119111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 818187 + ... + 842277.

It is an arithmetic number, because the mean of its divisors is an integer number (608383230).

Almost surely, 2^20001119112 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 20001119112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29202395040).

20001119112 is an abundant number, since it is smaller than the sum of its proper divisors (38403670968).

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

20001119112 is a wasteful number, since it uses less digits than its factorization.

20001119112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25003 (or 24996 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 20001119112 its reverse (21191110002), we get a palindrome (41192229114).

The spelling of 20001119112 in words is "twenty billion, one million, one hundred nineteen thousand, one hundred twelve".