3221116543 has 4 divisors (see below), whose sum is σ = 3253008888. Its totient is φ = 3189224200.

The previous prime is 3221116537. The next prime is 3221116553. The reversal of 3221116543 is 3456111223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3456111223 = 101 ⋅34218923.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3221116543 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 (3221116553) 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, 15946021 + ... + 15946222.

It is an arithmetic number, because the mean of its divisors is an integer number (813252222).

Almost surely, 2^3221116543 is an apocalyptic number.

3221116543 is a deficient number, since it is larger than the sum of its proper divisors (31892345).

3221116543 is a wasteful number, since it uses less digits than its factorization.

3221116543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31892344.

The product of its digits is 4320, while the sum is 28.

The square root of 3221116543 is about 56754.8812261994. The cubic root of 3221116543 is about 1476.8469125951.

Adding to 3221116543 its reverse (3456111223), we get a palindrome (6677227766).

The spelling of 3221116543 in words is "three billion, two hundred twenty-one million, one hundred sixteen thousand, five hundred forty-three".