200120112091 has 2 divisors, whose sum is σ = 200120112092. Its totient is φ = 200120112090.

The previous prime is 200120112089. The next prime is 200120112161. The reversal of 200120112091 is 190211021002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200120112091 - 2¹ = 200120112089 is a prime.

Together with 200120112089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (200120112041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060056045 + 100060056046.

It is an arithmetic number, because the mean of its divisors is an integer number (100060056046).

Almost surely, 2^200120112091 is an apocalyptic number.

200120112091 is a deficient number, since it is larger than the sum of its proper divisors (1).

200120112091 is an equidigital number, since it uses as much as digits as its factorization.

200120112091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 200120112091 its reverse (190211021002), we get a palindrome (390331133093).

The spelling of 200120112091 in words is "two hundred billion, one hundred twenty million, one hundred twelve thousand, ninety-one".