210020010012191 has 2 divisors, whose sum is σ = 210020010012192. Its totient is φ = 210020010012190.

The previous prime is 210020010012167. The next prime is 210020010012217. The reversal of 210020010012191 is 191210010020012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210020010012191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210020010012091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010005006095 + 105010005006096.

It is an arithmetic number, because the mean of its divisors is an integer number (105010005006096).

Almost surely, 2^{210020010012191} is an apocalyptic number.

210020010012191 is a deficient number, since it is larger than the sum of its proper divisors (1).

210020010012191 is an equidigital number, since it uses as much as digits as its factorization.

210020010012191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 210020010012191 in words is "two hundred ten trillion, twenty billion, ten million, twelve thousand, one hundred ninety-one".