20011103200 has 72 divisors (see below), whose sum is σ = 53293229640. Its totient is φ = 7276761600.

The previous prime is 20011103197. The next prime is 20011103209. The reversal of 20011103200 is 230111002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011103209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1128195 + ... + 1145794.

It is an arithmetic number, because the mean of its divisors is an integer number (740183745).

Almost surely, 2^20011103200 is an apocalyptic number.

20011103200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011103200 is an abundant number, since it is smaller than the sum of its proper divisors (33282126440).

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

20011103200 is a wasteful number, since it uses less digits than its factorization.

20011103200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274020 (or 2274007 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20011103200 its reverse (230111002), we get a palindrome (20241214202).

The spelling of 20011103200 in words is "twenty billion, eleven million, one hundred three thousand, two hundred".