221430022 has 16 divisors (see below), whose sum is σ = 374835600. Its totient is φ = 97179040.

The previous prime is 221430007. The next prime is 221430023. The reversal of 221430022 is 220034122.

It is a junction number, because it is equal to n+sod(n) for n = 221429978 and 221430005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221430023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172897 + ... + 174172.

It is an arithmetic number, because the mean of its divisors is an integer number (23427225).

Almost surely, 2^221430022 is an apocalyptic number.

221430022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221430022 is a deficient number, since it is larger than the sum of its proper divisors (153405578).

221430022 is a wasteful number, since it uses less digits than its factorization.

221430022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347111.

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

The square root of 221430022 is about 14880.5249235368. The cubic root of 221430022 is about 604.9862456177.

Adding to 221430022 its reverse (220034122), we get a palindrome (441464144).

The spelling of 221430022 in words is "two hundred twenty-one million, four hundred thirty thousand, twenty-two".