200021121111100 has 72 divisors (see below), whose sum is σ = 456898774384640. Its totient is φ = 75796079935680.

The previous prime is 200021121111079. The next prime is 200021121111143. The reversal of 200021121111100 is 1111121120002.

It is a happy number.

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, 105159109 + ... + 107044291.

Almost surely, 2^{200021121111100} is an apocalyptic number.

200021121111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200021121111100 is an abundant number, since it is smaller than the sum of its proper divisors (256877653273540).

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

200021121111100 is a wasteful number, since it uses less digits than its factorization.

200021121111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941059 (or 1941052 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 200021121111100 its reverse (1111121120002), we get a palindrome (201132242231102).

The spelling of 200021121111100 in words is "two hundred trillion, twenty-one billion, one hundred twenty-one million, one hundred eleven thousand, one hundred".