221024210144 has 12 divisors (see below), whose sum is σ = 435141413784. Its totient is φ = 110512105056.

The previous prime is 221024210119. The next prime is 221024210167. The reversal of 221024210144 is 441012420122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3453503252 + ... + 3453503315.

It is an arithmetic number, because the mean of its divisors is an integer number (36261784482).

Almost surely, 2^221024210144 is an apocalyptic number.

It is an amenable number.

221024210144 is a deficient number, since it is larger than the sum of its proper divisors (214117203640).

221024210144 is an equidigital number, since it uses as much as digits as its factorization.

221024210144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6907006577 (or 6907006569 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 221024210144 its reverse (441012420122), we get a palindrome (662036630266).

The spelling of 221024210144 in words is "two hundred twenty-one billion, twenty-four million, two hundred ten thousand, one hundred forty-four".