200001122121 has 8 divisors (see below), whose sum is σ = 273875410624. Its totient is φ = 129730457520.

The previous prime is 200001122119. The next prime is 200001122129. The reversal of 200001122121 is 121221100002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 200001122121 - 2¹ = 200001122119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200001122097 and 200001122106.

It is not an unprimeable number, because it can be changed into a prime (200001122129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900905845 + ... + 900906066.

It is an arithmetic number, because the mean of its divisors is an integer number (34234426328).

Almost surely, 2^200001122121 is an apocalyptic number.

It is an amenable number.

200001122121 is a deficient number, since it is larger than the sum of its proper divisors (73874288503).

200001122121 is a wasteful number, since it uses less digits than its factorization.

200001122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801811951.

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

Adding to 200001122121 its reverse (121221100002), we get a palindrome (321222222123).

The spelling of 200001122121 in words is "two hundred billion, one million, one hundred twenty-two thousand, one hundred twenty-one".