10201202191 has 4 divisors (see below), whose sum is σ = 10201851792. Its totient is φ = 10200552592.

The previous prime is 10201202171. The next prime is 10201202227. The reversal of 10201202191 is 19120210201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10201202191 - 2¹⁵ = 10201169423 is a prime.

It is a super-2 number, since 2×10201202191² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201202171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300646 + ... + 332851.

It is an arithmetic number, because the mean of its divisors is an integer number (2550462948).

Almost surely, 2^10201202191 is an apocalyptic number.

10201202191 is a deficient number, since it is larger than the sum of its proper divisors (649601).

10201202191 is an equidigital number, since it uses as much as digits as its factorization.

10201202191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649600.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 10201202191 its reverse (19120210201), we get a palindrome (29321412392).

The spelling of 10201202191 in words is "ten billion, two hundred one million, two hundred two thousand, one hundred ninety-one".