20112011443 has 4 divisors (see below), whose sum is σ = 20112527848. Its totient is φ = 20111495040.

The previous prime is 20112011431. The next prime is 20112011459. The reversal of 20112011443 is 34411021102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34411021102 = 2 ⋅17205510551.

It is a cyclic number.

It is not a de Polignac number, because 20112011443 - 2²¹ = 20109914291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20112011443.

It is not an unprimeable number, because it can be changed into a prime (20112011743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194553 + ... + 279418.

It is an arithmetic number, because the mean of its divisors is an integer number (5028131962).

Almost surely, 2^20112011443 is an apocalyptic number.

20112011443 is a deficient number, since it is larger than the sum of its proper divisors (516405).

20112011443 is an equidigital number, since it uses as much as digits as its factorization.

20112011443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516404.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20112011443 its reverse (34411021102), we get a palindrome (54523032545).

The spelling of 20112011443 in words is "twenty billion, one hundred twelve million, eleven thousand, four hundred forty-three".