221304022 has 16 divisors (see below), whose sum is σ = 348403680. Its totient is φ = 105225472.

The previous prime is 221303987. The next prime is 221304023. The reversal of 221304022 is 220403122.

221304022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221303987 and 221304005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221304023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5947 + ... + 21862.

It is an arithmetic number, because the mean of its divisors is an integer number (21775230).

Almost surely, 2^221304022 is an apocalyptic number.

221304022 is a deficient number, since it is larger than the sum of its proper divisors (127099658).

221304022 is a wasteful number, since it uses less digits than its factorization.

221304022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28007.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 221304022 is about 14876.2905994741. The cubic root of 221304022 is about 604.8714723671.

Adding to 221304022 its reverse (220403122), we get a palindrome (441707144).

The spelling of 221304022 in words is "two hundred twenty-one million, three hundred four thousand, twenty-two".