200121111011 has 8 divisors (see below), whose sum is σ = 203411233824. Its totient is φ = 196831293120.

The previous prime is 200121110993. The next prime is 200121111019. The reversal of 200121111011 is 110111121002.

200121111011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200121111011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200121110983 and 200121111001.

It is not an unprimeable number, because it can be changed into a prime (200121111019) 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 7 ways as a sum of consecutive naturals, for example, 1519295 + ... + 1645751.

It is an arithmetic number, because the mean of its divisors is an integer number (25426404228).

Almost surely, 2^200121111011 is an apocalyptic number.

200121111011 is a deficient number, since it is larger than the sum of its proper divisors (3290122813).

200121111011 is a wasteful number, since it uses less digits than its factorization.

200121111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152461.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 200121111011 its reverse (110111121002), we get a palindrome (310232232013).

Subtracting from 200121111011 its reverse (110111121002), we obtain a palindrome (90009990009).

The spelling of 200121111011 in words is "two hundred billion, one hundred twenty-one million, one hundred eleven thousand, eleven".