20011113100200 has 384 divisors, whose sum is σ = 64564612600320. Its totient is φ = 5122903680000.

The previous prime is 20011113100171. The next prime is 20011113100207. The reversal of 20011113100200 is 200131111002.

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

It is not an unprimeable number, because it can be changed into a prime (20011113100207) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 596208619 + ... + 596242181.

It is an arithmetic number, because the mean of its divisors is an integer number (168137011980).

Almost surely, 2^{20011113100200} is an apocalyptic number.

20011113100200 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 20011113100200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32282306300160).

20011113100200 is an abundant number, since it is smaller than the sum of its proper divisors (44553499500120).

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

20011113100200 is a wasteful number, since it uses less digits than its factorization.

20011113100200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33977 (or 33968 counting only the distinct ones).

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

Adding to 20011113100200 its reverse (200131111002), we get a palindrome (20211244211202).

The spelling of 20011113100200 in words is "twenty trillion, eleven billion, one hundred thirteen million, one hundred thousand, two hundred".