221123320230 has 64 divisors (see below), whose sum is σ = 554749747200. Its totient is φ = 56341733760.

The previous prime is 221123320219. The next prime is 221123320273. The reversal of 221123320230 is 32023321122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221123320197 and 221123320206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1431385 + ... + 1578324.

It is an arithmetic number, because the mean of its divisors is an integer number (8667964800).

Almost surely, 2^221123320230 is an apocalyptic number.

221123320230 is an abundant number, since it is smaller than the sum of its proper divisors (333626426970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221123320230 is a wasteful number, since it uses less digits than its factorization.

221123320230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3009829.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221123320230 its reverse (32023321122), we get a palindrome (253146641352).

The spelling of 221123320230 in words is "two hundred twenty-one billion, one hundred twenty-three million, three hundred twenty thousand, two hundred thirty".