200111012091 has 24 divisors (see below), whose sum is σ = 292059425840. Its totient is φ = 132024162816.

The previous prime is 200111012039. The next prime is 200111012131. The reversal of 200111012091 is 190210111002.

It is a happy number.

It is not a de Polignac number, because 200111012091 - 2²⁷ = 199976794363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200111012191) 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, 136035 + ... + 647091.

Almost surely, 2^200111012091 is an apocalyptic number.

200111012091 is a deficient number, since it is larger than the sum of its proper divisors (91948413749).

200111012091 is a wasteful number, since it uses less digits than its factorization.

200111012091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511515 (or 511512 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 200111012091 its reverse (190210111002), we get a palindrome (390321123093).

The spelling of 200111012091 in words is "two hundred billion, one hundred eleven million, twelve thousand, ninety-one".