1010020002191 has 2 divisors, whose sum is σ = 1010020002192. Its totient is φ = 1010020002190.

The previous prime is 1010020002161. The next prime is 1010020002203. The reversal of 1010020002191 is 1912000200101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1010020002191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010020002161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505010001095 + 505010001096.

It is an arithmetic number, because the mean of its divisors is an integer number (505010001096).

Almost surely, 2^{1010020002191} is an apocalyptic number.

1010020002191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010020002191 is an equidigital number, since it uses as much as digits as its factorization.

1010020002191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1010020002191 its reverse (1912000200101), we get a palindrome (2922020202292).

The spelling of 1010020002191 in words is "one trillion, ten billion, twenty million, two thousand, one hundred ninety-one".