21150036200191 has 2 divisors, whose sum is σ = 21150036200192. Its totient is φ = 21150036200190.

The previous prime is 21150036200087. The next prime is 21150036200203. The reversal of 21150036200191 is 19100263005112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21150036200191 - 2¹⁵ = 21150036167423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21150036200591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10575018100095 + 10575018100096.

It is an arithmetic number, because the mean of its divisors is an integer number (10575018100096).

Almost surely, 2^{21150036200191} is an apocalyptic number.

21150036200191 is a deficient number, since it is larger than the sum of its proper divisors (1).

21150036200191 is an equidigital number, since it uses as much as digits as its factorization.

21150036200191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 31.

The spelling of 21150036200191 in words is "twenty-one trillion, one hundred fifty billion, thirty-six million, two hundred thousand, one hundred ninety-one".