20111193 has 8 divisors (see below), whose sum is σ = 29794400. Its totient is φ = 13407444.

The previous prime is 20111183. The next prime is 20111213. The reversal of 20111193 is 39111102.

It is not a de Polignac number, because 20111193 - 2¹⁰ = 20110169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20111183) 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, 372403 + ... + 372456.

It is an arithmetic number, because the mean of its divisors is an integer number (3724300).

Almost surely, 2^20111193 is an apocalyptic number.

It is an amenable number.

20111193 is a deficient number, since it is larger than the sum of its proper divisors (9683207).

20111193 is an equidigital number, since it uses as much as digits as its factorization.

20111193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744868 (or 744862 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 20111193 is about 4484.5504791450. The cubic root of 20111193 is about 271.9438726822.

Adding to 20111193 its reverse (39111102), we get a palindrome (59222295).

The spelling of 20111193 in words is "twenty million, one hundred eleven thousand, one hundred ninety-three".