221320010430 has 24 divisors (see below), whose sum is σ = 575432027352. Its totient is φ = 59018669424.

The previous prime is 221320010423. The next prime is 221320010447. The reversal of 221320010430 is 34010023122.

221320010430 is a `hidden beast` number, since 2 + 21 + 3 + 200 + 10 + 430 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 1229555524 + ... + 1229555703.

It is an arithmetic number, because the mean of its divisors is an integer number (23976334473).

Almost surely, 2^221320010430 is an apocalyptic number.

221320010430 is an abundant number, since it is smaller than the sum of its proper divisors (354112016922).

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

221320010430 is a wasteful number, since it uses less digits than its factorization.

221320010430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459111240 (or 2459111237 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 221320010430 its reverse (34010023122), we get a palindrome (255330033552).

The spelling of 221320010430 in words is "two hundred twenty-one billion, three hundred twenty million, ten thousand, four hundred thirty".