221300222 has 16 divisors (see below), whose sum is σ = 389984112. Its totient is φ = 92853120.

The previous prime is 221300221. The next prime is 221300243. The reversal of 221300222 is 222003122.

It is a junction number, because it is equal to n+sod(n) for n = 221300197 and 221300206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221300221) 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, 386603 + ... + 387174.

It is an arithmetic number, because the mean of its divisors is an integer number (24374007).

Almost surely, 2^221300222 is an apocalyptic number.

221300222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221300222 is a deficient number, since it is larger than the sum of its proper divisors (168683890).

221300222 is a wasteful number, since it uses less digits than its factorization.

221300222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773803.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 221300222 is about 14876.1628789147. The cubic root of 221300222 is about 604.8680102749.

Adding to 221300222 its reverse (222003122), we get a palindrome (443303344).

The spelling of 221300222 in words is "two hundred twenty-one million, three hundred thousand, two hundred twenty-two".