221424302 has 16 divisors (see below), whose sum is σ = 365720832. Its totient is φ = 99705720.

The previous prime is 221424277. The next prime is 221424319. The reversal of 221424302 is 203424122.

221424302 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44678 + ... + 49385.

It is an arithmetic number, because the mean of its divisors is an integer number (22857552).

Almost surely, 2^221424302 is an apocalyptic number.

221424302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221424302 is a deficient number, since it is larger than the sum of its proper divisors (144296530).

221424302 is a wasteful number, since it uses less digits than its factorization.

221424302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94183.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 221424302 is about 14880.3327247747. The cubic root of 221424302 is about 604.9810362200.

Adding to 221424302 its reverse (203424122), we get a palindrome (424848424).

The spelling of 221424302 in words is "two hundred twenty-one million, four hundred twenty-four thousand, three hundred two".