1020210320191 has 2 divisors, whose sum is σ = 1020210320192. Its totient is φ = 1020210320190.

The previous prime is 1020210320161. The next prime is 1020210320201. The reversal of 1020210320191 is 1910230120201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020210320191 - 2⁵ = 1020210320159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020210320161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510105160095 + 510105160096.

It is an arithmetic number, because the mean of its divisors is an integer number (510105160096).

Almost surely, 2^{1020210320191} is an apocalyptic number.

1020210320191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020210320191 is an equidigital number, since it uses as much as digits as its factorization.

1020210320191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 1020210320191 its reverse (1910230120201), we get a palindrome (2930440440392).

The spelling of 1020210320191 in words is "one trillion, twenty billion, two hundred ten million, three hundred twenty thousand, one hundred ninety-one".