20210111200 has 36 divisors (see below), whose sum is σ = 49337935920. Its totient is φ = 8084044160.

The previous prime is 20210111183. The next prime is 20210111219. The reversal of 20210111200 is 211101202.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12630520 + ... + 12632119.

It is an arithmetic number, because the mean of its divisors is an integer number (1370498220).

Almost surely, 2^20210111200 is an apocalyptic number.

20210111200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210111200 is an abundant number, since it is smaller than the sum of its proper divisors (29127824720).

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

20210111200 is a wasteful number, since it uses less digits than its factorization.

20210111200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25262659 (or 25262646 counting only the distinct ones).

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

Adding to 20210111200 its reverse (211101202), we get a palindrome (20421212402).

The spelling of 20210111200 in words is "twenty billion, two hundred ten million, one hundred eleven thousand, two hundred".