221300221325 has 24 divisors (see below), whose sum is σ = 280838477568. Its totient is φ = 172895546880.

The previous prime is 221300221321. The next prime is 221300221333. The reversal of 221300221325 is 523122003122.

It is not a de Polignac number, because 221300221325 - 2² = 221300221321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221300221325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221300221321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9171677 + ... + 9195773.

It is an arithmetic number, because the mean of its divisors is an integer number (11701603232).

Almost surely, 2^221300221325 is an apocalyptic number.

221300221325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

221300221325 is a deficient number, since it is larger than the sum of its proper divisors (59538256243).

221300221325 is a wasteful number, since it uses less digits than its factorization.

221300221325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32693 (or 32688 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 221300221325 its reverse (523122003122), we get a palindrome (744422224447).

The spelling of 221300221325 in words is "two hundred twenty-one billion, three hundred million, two hundred twenty-one thousand, three hundred twenty-five".