221324012430 has 32 divisors (see below), whose sum is σ = 531288798624. Its totient is φ = 59007384576.

The previous prime is 221324012417. The next prime is 221324012449. The reversal of 221324012430 is 34210423122.

It is a happy number.

It is a super-2 number, since 2×221324012430² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221324012430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 625819 + ... + 913398.

It is an arithmetic number, because the mean of its divisors is an integer number (16602774957).

Almost surely, 2^221324012430 is an apocalyptic number.

221324012430 is an abundant number, since it is smaller than the sum of its proper divisors (309964786194).

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

221324012430 is a wasteful number, since it uses less digits than its factorization.

221324012430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544020.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 221324012430 its reverse (34210423122), we get a palindrome (255534435552).

The spelling of 221324012430 in words is "two hundred twenty-one billion, three hundred twenty-four million, twelve thousand, four hundred thirty".