200121112 has 32 divisors (see below), whose sum is σ = 396446400. Its totient is φ = 94549504.

The previous prime is 200121109. The next prime is 200121113. The reversal of 200121112 is 211121002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1728 + ... + 20080.

It is an arithmetic number, because the mean of its divisors is an integer number (12388950).

Almost surely, 2^200121112 is an apocalyptic number.

It is an amenable number.

200121112 is a deficient number, since it is larger than the sum of its proper divisors (196325288).

200121112 is a wasteful number, since it uses less digits than its factorization.

200121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18435 (or 18431 counting only the distinct ones).

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

The square root of 200121112 is about 14146.4169315060. The cubic root of 200121112 is about 584.9215683683.

Adding to 200121112 its reverse (211121002), we get a palindrome (411242114).

The spelling of 200121112 in words is "two hundred million, one hundred twenty-one thousand, one hundred twelve".