2221111543 has 12 divisors (see below), whose sum is σ = 2586219960. Its totient is φ = 1901984112.

The previous prime is 2221111483. The next prime is 2221111547. The reversal of 2221111543 is 3451111222.

It is not a de Polignac number, because 2221111543 - 2⁹ = 2221111031 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 (2221111547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31180 + ... + 73582.

It is an arithmetic number, because the mean of its divisors is an integer number (215518330).

Almost surely, 2^2221111543 is an apocalyptic number.

2221111543 is a deficient number, since it is larger than the sum of its proper divisors (365108417).

2221111543 is a wasteful number, since it uses less digits than its factorization.

2221111543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43486 (or 43479 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 2221111543 is about 47128.6700745947. The cubic root of 2221111543 is about 1304.7384360516.

Adding to 2221111543 its reverse (3451111222), we get a palindrome (5672222765).

The spelling of 2221111543 in words is "two billion, two hundred twenty-one million, one hundred eleven thousand, five hundred forty-three".