22111443543 has 16 divisors (see below), whose sum is σ = 33698099456. Its totient is φ = 12633433920.

The previous prime is 22111443509. The next prime is 22111443547. The reversal of 22111443543 is 34534411122.

It is not a de Polignac number, because 22111443543 - 2¹⁷ = 22111312471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22111443543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111443547) 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, 101988 + ... + 233718.

It is an arithmetic number, because the mean of its divisors is an integer number (2106131216).

Almost surely, 2^22111443543 is an apocalyptic number.

22111443543 is a deficient number, since it is larger than the sum of its proper divisors (11586655913).

22111443543 is a wasteful number, since it uses less digits than its factorization.

22111443543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139734.

The product of its digits is 11520, while the sum is 30.

Adding to 22111443543 its reverse (34534411122), we get a palindrome (56645854665).

The spelling of 22111443543 in words is "twenty-two billion, one hundred eleven million, four hundred forty-three thousand, five hundred forty-three".