200011022121 has 4 divisors (see below), whose sum is σ = 266681362832. Its totient is φ = 133340681412.

The previous prime is 200011022111. The next prime is 200011022149. The reversal of 200011022121 is 121220110002.

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 not a de Polignac number, because 200011022121 - 2¹¹ = 200011020073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200011022097 and 200011022106.

It is not an unprimeable number, because it can be changed into a prime (200011022111) 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, 33335170351 + ... + 33335170356.

It is an arithmetic number, because the mean of its divisors is an integer number (66670340708).

Almost surely, 2^200011022121 is an apocalyptic number.

It is an amenable number.

200011022121 is a deficient number, since it is larger than the sum of its proper divisors (66670340711).

200011022121 is an equidigital number, since it uses as much as digits as its factorization.

200011022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66670340710.

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

Adding to 200011022121 its reverse (121220110002), we get a palindrome (321231132123).

The spelling of 200011022121 in words is "two hundred billion, eleven million, twenty-two thousand, one hundred twenty-one".