200200112121 has 4 divisors (see below), whose sum is σ = 266933482832. Its totient is φ = 133466741412.

The previous prime is 200200112113. The next prime is 200200112129. The reversal of 200200112121 is 121211002002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (200200112113) and next prime (200200112129).

It is not a de Polignac number, because 200200112121 - 2³ = 200200112113 is a prime.

It is a super-2 number, since 2×200200112121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 200200112097 and 200200112106.

It is not an unprimeable number, because it can be changed into a prime (200200112129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33366685351 + ... + 33366685356.

It is an arithmetic number, because the mean of its divisors is an integer number (66733370708).

Almost surely, 2^200200112121 is an apocalyptic number.

It is an amenable number.

200200112121 is a deficient number, since it is larger than the sum of its proper divisors (66733370711).

200200112121 is an equidigital number, since it uses as much as digits as its factorization.

200200112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66733370710.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 200200112121 its reverse (121211002002), we get a palindrome (321411114123).

The spelling of 200200112121 in words is "two hundred billion, two hundred million, one hundred twelve thousand, one hundred twenty-one".