10191020201 has 2 divisors, whose sum is σ = 10191020202. Its totient is φ = 10191020200.

The previous prime is 10191020179. The next prime is 10191020261. The reversal of 10191020201 is 10202019101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6503616025 + 3687404176 = 80645^2 + 60724^2 .

It is a cyclic number.

It is not a de Polignac number, because 10191020201 - 2⁶ = 10191020137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10191020201.

It is not a weakly prime, because it can be changed into another prime (10191020261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5095510100 + 5095510101.

It is an arithmetic number, because the mean of its divisors is an integer number (5095510101).

Almost surely, 2^10191020201 is an apocalyptic number.

It is an amenable number.

10191020201 is a deficient number, since it is larger than the sum of its proper divisors (1).

10191020201 is an equidigital number, since it uses as much as digits as its factorization.

10191020201 is an evil number, because the sum of its binary digits is even.

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

Adding to 10191020201 its reverse (10202019101), we get a palindrome (20393039302).

The spelling of 10191020201 in words is "ten billion, one hundred ninety-one million, twenty thousand, two hundred one".