221144123002224 has 80 divisors (see below), whose sum is σ = 579822898423680. Its totient is φ = 72613584848640.

The previous prime is 221144123002219. The next prime is 221144123002261. The reversal of 221144123002224 is 422200321441122.

It is a junction number, because it is equal to n+sod(n) for n = 221144123002191 and 221144123002200.

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 15 ways as a sum of consecutive naturals, for example, 288475114 + ... + 289240694.

It is an arithmetic number, because the mean of its divisors is an integer number (7247786230296).

Almost surely, 2^{221144123002224} is an apocalyptic number.

221144123002224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

221144123002224 is an abundant number, since it is smaller than the sum of its proper divisors (358678775421456).

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

221144123002224 is a wasteful number, since it uses less digits than its factorization.

221144123002224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855478 (or 855472 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 221144123002224 its reverse (422200321441122), we get a palindrome (643344444443346).

The spelling of 221144123002224 in words is "two hundred twenty-one trillion, one hundred forty-four billion, one hundred twenty-three million, two thousand, two hundred twenty-four".