20111134300 has 108 divisors (see below), whose sum is σ = 46478743920. Its totient is φ = 7551764480.

The previous prime is 20111134213. The next prime is 20111134301. The reversal of 20111134300 is 343111102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111134301) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16443489 + ... + 16444711.

It is an arithmetic number, because the mean of its divisors is an integer number (430358740).

Almost surely, 2^20111134300 is an apocalyptic number.

20111134300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20111134300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23239371960).

20111134300 is an abundant number, since it is smaller than the sum of its proper divisors (26367609620).

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

20111134300 is a wasteful number, since it uses less digits than its factorization.

20111134300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840 (or 1816 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20111134300 its reverse (343111102), we get a palindrome (20454245402).

It can be divided in two parts, 2011 and 1134300, that added together give a palindrome (1136311).

The spelling of 20111134300 in words is "twenty billion, one hundred eleven million, one hundred thirty-four thousand, three hundred".