221321113230 has 64 divisors (see below), whose sum is σ = 607439513088. Its totient is φ = 50555406720.

The previous prime is 221321113213. The next prime is 221321113291. The reversal of 221321113230 is 32311123122.

221321113230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221321113230² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221321113197 and 221321113206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5517 + ... + 665336.

It is an arithmetic number, because the mean of its divisors is an integer number (9491242392).

Almost surely, 2^221321113230 is an apocalyptic number.

221321113230 is an abundant number, since it is smaller than the sum of its proper divisors (386118399858).

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

221321113230 is a wasteful number, since it uses less digits than its factorization.

221321113230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672441.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 221321113230 its reverse (32311123122), we get a palindrome (253632236352).

The spelling of 221321113230 in words is "two hundred twenty-one billion, three hundred twenty-one million, one hundred thirteen thousand, two hundred thirty".