1210020102191 has 2 divisors, whose sum is σ = 1210020102192. Its totient is φ = 1210020102190.

The previous prime is 1210020102143. The next prime is 1210020102209. The reversal of 1210020102191 is 1912010200121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1210020102191 - 2¹⁰ = 1210020101167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210020102121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605010051095 + 605010051096.

It is an arithmetic number, because the mean of its divisors is an integer number (605010051096).

Almost surely, 2^{1210020102191} is an apocalyptic number.

1210020102191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210020102191 is an equidigital number, since it uses as much as digits as its factorization.

1210020102191 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 1210020102191 in words is "one trillion, two hundred ten billion, twenty million, one hundred two thousand, one hundred ninety-one".