221301440324 has 24 divisors (see below), whose sum is σ = 395469257568. Its totient is φ = 108330488640.

The previous prime is 221301440317. The next prime is 221301440357. The reversal of 221301440324 is 423044103122.

It is a junction number, because it is equal to n+sod(n) for n = 221301440293 and 221301440302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2489297 + ... + 2576664.

It is an arithmetic number, because the mean of its divisors is an integer number (16477885732).

Almost surely, 2^221301440324 is an apocalyptic number.

It is an amenable number.

221301440324 is a deficient number, since it is larger than the sum of its proper divisors (174167817244).

221301440324 is a wasteful number, since it uses less digits than its factorization.

221301440324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5066195 (or 5066193 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 221301440324 its reverse (423044103122), we get a palindrome (644345543446).

The spelling of 221301440324 in words is "two hundred twenty-one billion, three hundred one million, four hundred forty thousand, three hundred twenty-four".