11202120191 has 8 divisors (see below), whose sum is σ = 11428244640. Its totient is φ = 10978223872.

The previous prime is 11202120157. The next prime is 11202120197. The reversal of 11202120191 is 19102120211.

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 11202120191 - 2¹⁴ = 11202103807 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 (11202120197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546875 + ... + 566988.

It is an arithmetic number, because the mean of its divisors is an integer number (1428530580).

Almost surely, 2^11202120191 is an apocalyptic number.

11202120191 is a deficient number, since it is larger than the sum of its proper divisors (226124449).

11202120191 is a wasteful number, since it uses less digits than its factorization.

11202120191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114065.

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

Adding to 11202120191 its sum of digits (20), we get a palindrome (11202120211).

The spelling of 11202120191 in words is "eleven billion, two hundred two million, one hundred twenty thousand, one hundred ninety-one".