2221405543 has 32 divisors (see below), whose sum is σ = 2675433600. Its totient is φ = 1842462720.

The previous prime is 2221405541. The next prime is 2221405561. The reversal of 2221405543 is 3455041222.

It is not a de Polignac number, because 2221405543 - 2¹ = 2221405541 is a prime.

It is a super-2 number, since 2×2221405543² = 9869285172942249698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221405541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1926055 + ... + 1927207.

It is an arithmetic number, because the mean of its divisors is an integer number (83607300).

Almost surely, 2^2221405543 is an apocalyptic number.

2221405543 is a deficient number, since it is larger than the sum of its proper divisors (454028057).

2221405543 is a wasteful number, since it uses less digits than its factorization.

2221405543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352 (or 1338 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 2221405543 is about 47131.7890918645. The cubic root of 2221405543 is about 1304.7960012495.

Adding to 2221405543 its reverse (3455041222), we get a palindrome (5676446765).

The spelling of 2221405543 in words is "two billion, two hundred twenty-one million, four hundred five thousand, five hundred forty-three".