221300220004 has 6 divisors (see below), whose sum is σ = 387275385014. Its totient is φ = 110650110000.

The previous prime is 221300219957. The next prime is 221300220007. The reversal of 221300220004 is 400022003122.

It can be written as a sum of positive squares in only one way, i.e., 187038950400 + 34261269604 = 432480^2 + 185098^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221300220004.

It is not an unprimeable number, because it can be changed into a prime (221300220007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27662527497 + ... + 27662527504.

Almost surely, 2^221300220004 is an apocalyptic number.

It is an amenable number.

221300220004 is a deficient number, since it is larger than the sum of its proper divisors (165975165010).

221300220004 is a wasteful number, since it uses less digits than its factorization.

221300220004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55325055005 (or 55325055003 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 221300220004 its reverse (400022003122), we get a palindrome (621322223126).

The spelling of 221300220004 in words is "two hundred twenty-one billion, three hundred million, two hundred twenty thousand, four".