200112215491 has 2 divisors, whose sum is σ = 200112215492. Its totient is φ = 200112215490.

The previous prime is 200112215489. The next prime is 200112215519. The reversal of 200112215491 is 194512211002.

It is an a-pointer prime, because the next prime (200112215519) can be obtained adding 200112215491 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200112215491 - 2¹ = 200112215489 is a prime.

Together with 200112215489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (200112215431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100056107745 + 100056107746.

It is an arithmetic number, because the mean of its divisors is an integer number (100056107746).

Almost surely, 2^200112215491 is an apocalyptic number.

200112215491 is a deficient number, since it is larger than the sum of its proper divisors (1).

200112215491 is an equidigital number, since it uses as much as digits as its factorization.

200112215491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

Adding to 200112215491 its reverse (194512211002), we get a palindrome (394624426493).

The spelling of 200112215491 in words is "two hundred billion, one hundred twelve million, two hundred fifteen thousand, four hundred ninety-one".