200112021 has 24 divisors (see below), whose sum is σ = 304124184. Its totient is φ = 126627840.

The previous prime is 200112019. The next prime is 200112023. The reversal of 200112021 is 120211002.

It is an interprime number because it is at equal distance from previous prime (200112019) and next prime (200112023).

It can be written as a sum of positive squares in 4 ways, for example, as 82628100 + 117483921 = 9090^2 + 10839^2 .

It is not a de Polignac number, because 200112021 - 2¹ = 200112019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 200111994 and 200112012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200112023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6325 + ... + 20981.

It is an arithmetic number, because the mean of its divisors is an integer number (12671841).

Almost surely, 2^200112021 is an apocalyptic number.

It is an amenable number.

200112021 is a deficient number, since it is larger than the sum of its proper divisors (104012163).

200112021 is a wasteful number, since it uses less digits than its factorization.

200112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14741 (or 14738 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 200112021 is about 14146.0956097433. The cubic root of 200112021 is about 584.9127110611.

Adding to 200112021 its reverse (120211002), we get a palindrome (320323023).

The spelling of 200112021 in words is "two hundred million, one hundred twelve thousand, twenty-one".