10201221191 has 8 divisors (see below), whose sum is σ = 11688512160. Its totient is φ = 8721423648.

The previous prime is 10201221097. The next prime is 10201221203. The reversal of 10201221191 is 19112210201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10201221191 - 2¹⁰ = 10201220167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201221791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1870436 + ... + 1875881.

It is an arithmetic number, because the mean of its divisors is an integer number (1461064020).

Almost surely, 2^10201221191 is an apocalyptic number.

10201221191 is a deficient number, since it is larger than the sum of its proper divisors (1487290969).

10201221191 is an equidigital number, since it uses as much as digits as its factorization.

10201221191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3746713.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 10201221191 its reverse (19112210201), we get a palindrome (29313431392).

The spelling of 10201221191 in words is "ten billion, two hundred one million, two hundred twenty-one thousand, one hundred ninety-one".