1111320225543 has 64 divisors (see below), whose sum is σ = 1645466296320. Its totient is φ = 661587024000.

The previous prime is 1111320225517. The next prime is 1111320225577. The reversal of 1111320225543 is 3455220231111.

It is a happy number.

It is not a de Polignac number, because 1111320225543 - 2⁵ = 1111320225511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1111320225543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111320225143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 163932328 + ... + 163939106.

It is an arithmetic number, because the mean of its divisors is an integer number (25710410880).

Almost surely, 2^{1111320225543} is an apocalyptic number.

1111320225543 is a deficient number, since it is larger than the sum of its proper divisors (534146070777).

1111320225543 is a wasteful number, since it uses less digits than its factorization.

1111320225543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7308.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 1111320225543 its reverse (3455220231111), we get a palindrome (4566540456654).

The spelling of 1111320225543 in words is "one trillion, one hundred eleven billion, three hundred twenty million, two hundred twenty-five thousand, five hundred forty-three".