200001111111 has 24 divisors (see below), whose sum is σ = 306885150000. Its totient is φ = 125157612672.

The previous prime is 200001111071. The next prime is 200001111181. The reversal of 200001111111 is 111111100002.

It is not a de Polignac number, because 200001111111 - 2²¹ = 199999013959 is a prime.

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

200001111111 is a modest number, since divided by 1111111 gives 20000 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 200001111093 and 200001111102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200001111181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5346486 + ... + 5383763.

It is an arithmetic number, because the mean of its divisors is an integer number (12786881250).

Almost surely, 2^200001111111 is an apocalyptic number.

200001111111 is a deficient number, since it is larger than the sum of its proper divisors (106884038889).

200001111111 is a wasteful number, since it uses less digits than its factorization.

200001111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10730383 (or 10730380 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 200001111111 its reverse (111111100002), we get a palindrome (311112211113).

The spelling of 200001111111 in words is "two hundred billion, one million, one hundred eleven thousand, one hundred eleven".