20111111110200 has 96 divisors (see below), whose sum is σ = 68012121231360. Its totient is φ = 4875420873600.

The previous prime is 20111111110151. The next prime is 20111111110201. The reversal of 20111111110200 is 201111111102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111111110201) 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, 1523562424 + ... + 1523575623.

It is an arithmetic number, because the mean of its divisors is an integer number (708459596160).

Almost surely, 2^{20111111110200} is an apocalyptic number.

20111111110200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111111110200 is an abundant number, since it is smaller than the sum of its proper divisors (47901010121160).

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

20111111110200 is a wasteful number, since it uses less digits than its factorization.

20111111110200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047138077 (or 3047138068 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 20111111110200 its reverse (201111111102), we get a palindrome (20312222221302).

20111111110200 divided by its reverse (201111111102) gives a square (100 = 10²).

It can be divided in two parts, 201111 and 11110200, that added together give a palindrome (11311311).

The spelling of 20111111110200 in words is "twenty trillion, one hundred eleven billion, one hundred eleven million, one hundred ten thousand, two hundred".