200111123100 has 144 divisors (see below), whose sum is σ = 677840115456. Its totient is φ = 44624064000.

The previous prime is 200111123077. The next prime is 200111123117. The reversal of 200111123100 is 1321111002.

It is a super-2 number, since 2×200111123100² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1075986 + ... + 1248185.

It is an arithmetic number, because the mean of its divisors is an integer number (4707223024).

Almost surely, 2^200111123100 is an apocalyptic number.

200111123100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200111123100 is an abundant number, since it is smaller than the sum of its proper divisors (477728992356).

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

200111123100 is a wasteful number, since it uses less digits than its factorization.

200111123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324236 (or 2324229 counting only the distinct ones).

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

Adding to 200111123100 its reverse (1321111002), we get a palindrome (201432234102).

The spelling of 200111123100 in words is "two hundred billion, one hundred eleven million, one hundred twenty-three thousand, one hundred".