11202020191 has 8 divisors (see below), whose sum is σ = 11504682000. Its totient is φ = 10903118400.

The previous prime is 11202020161. The next prime is 11202020197. The reversal of 11202020191 is 19102020211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11202020191 - 2¹⁷ = 11201889119 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 (11202020197) 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 in 7 ways as a sum of consecutive naturals, for example, 933966 + ... + 945883.

It is an arithmetic number, because the mean of its divisors is an integer number (1438085250).

Almost surely, 2^11202020191 is an apocalyptic number.

11202020191 is a deficient number, since it is larger than the sum of its proper divisors (302661809).

11202020191 is a wasteful number, since it uses less digits than its factorization.

11202020191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880009.

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

It can be divided in two parts, 11 and 202020191, that added together give a palindrome (202020202).

The spelling of 11202020191 in words is "eleven billion, two hundred two million, twenty thousand, one hundred ninety-one".