20111102200 has 96 divisors (see below), whose sum is σ = 54314336160. Its totient is φ = 6782169600.

The previous prime is 20111102183. The next prime is 20111102251. The reversal of 20111102200 is 220111102.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32347 + ... + 203146.

It is an arithmetic number, because the mean of its divisors is an integer number (565774335).

Almost surely, 2^20111102200 is an apocalyptic number.

20111102200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111102200 is an abundant number, since it is smaller than the sum of its proper divisors (34203233960).

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

20111102200 is a wasteful number, since it uses less digits than its factorization.

20111102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235577 (or 235568 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20111102200 its reverse (220111102), we get a palindrome (20331213302).

The spelling of 20111102200 in words is "twenty billion, one hundred eleven million, one hundred two thousand, two hundred".