11222020191 has 16 divisors (see below), whose sum is σ = 15378524000. Its totient is φ = 7279049664.

The previous prime is 11222020171. The next prime is 11222020193. The reversal of 11222020191 is 19102022211.

It is not a de Polignac number, because 11222020191 - 2³¹ = 9074536543 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 (11222020193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115035 + ... + 188883.

It is an arithmetic number, because the mean of its divisors is an integer number (961157750).

Almost surely, 2^11222020191 is an apocalyptic number.

11222020191 is a deficient number, since it is larger than the sum of its proper divisors (4156503809).

11222020191 is an frugal number, since it uses more digits than its factorization.

11222020191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73963 (or 73889 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

It can be divided in two parts, 11222020 and 191, that added together give a palindrome (11222211).

The spelling of 11222020191 in words is "eleven billion, two hundred twenty-two million, twenty thousand, one hundred ninety-one".