221411043 has 64 divisors (see below), whose sum is σ = 400619520. Its totient is φ = 117974016.

The previous prime is 221411039. The next prime is 221411053. The reversal of 221411043 is 340114122.

It is not a de Polignac number, because 221411043 - 2² = 221411039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221411023) 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, 439930 + ... + 440432.

It is an arithmetic number, because the mean of its divisors is an integer number (6259680).

Almost surely, 2^221411043 is an apocalyptic number.

221411043 is a deficient number, since it is larger than the sum of its proper divisors (179208477).

221411043 is a wasteful number, since it uses less digits than its factorization.

221411043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 221411043 is about 14879.8871971531. The cubic root of 221411043 is about 604.9689604548.

Adding to 221411043 its reverse (340114122), we get a palindrome (561525165).

The spelling of 221411043 in words is "two hundred twenty-one million, four hundred eleven thousand, forty-three".