221120043 has 16 divisors (see below), whose sum is σ = 310665600. Its totient is φ = 139510080.

The previous prime is 221120017. The next prime is 221120047. The reversal of 221120043 is 340021122.

It is a de Polignac number, because none of the positive numbers 2^k-221120043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221120047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90508 + ... + 92918.

It is an arithmetic number, because the mean of its divisors is an integer number (19416600).

Almost surely, 2^221120043 is an apocalyptic number.

221120043 is a deficient number, since it is larger than the sum of its proper divisors (89545557).

221120043 is a wasteful number, since it uses less digits than its factorization.

221120043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4042.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 221120043 is about 14870.1056822068. The cubic root of 221120043 is about 604.7038078423.

Adding to 221120043 its reverse (340021122), we get a palindrome (561141165).

The spelling of 221120043 in words is "two hundred twenty-one million, one hundred twenty thousand, forty-three".