221231013324 has 12 divisors (see below), whose sum is σ = 516205697784. Its totient is φ = 73743671104.

The previous prime is 221231013313. The next prime is 221231013379. The reversal of 221231013324 is 423310132122.

221231013324 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×221231013324² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221231013294 and 221231013303.

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 3 ways as a sum of consecutive naturals, for example, 9217958877 + ... + 9217958900.

It is an arithmetic number, because the mean of its divisors is an integer number (43017141482).

Almost surely, 2^221231013324 is an apocalyptic number.

It is an amenable number.

221231013324 is an abundant number, since it is smaller than the sum of its proper divisors (294974684460).

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

221231013324 is a wasteful number, since it uses less digits than its factorization.

221231013324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18435917784 (or 18435917782 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 221231013324 its reverse (423310132122), we get a palindrome (644541145446).

The spelling of 221231013324 in words is "two hundred twenty-one billion, two hundred thirty-one million, thirteen thousand, three hundred twenty-four".