221300220005 has 4 divisors (see below), whose sum is σ = 265560264012. Its totient is φ = 177040176000.

The previous prime is 221300219957. The next prime is 221300220007. The reversal of 221300220005 is 500022003122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51112618561 + 170187601444 = 226081^2 + 412538^2 .

It is not a de Polignac number, because 221300220005 - 2¹² = 221300215909 is a prime.

It is a super-2 number, since 2×221300220005² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 22130021996 + ... + 22130022005.

It is an arithmetic number, because the mean of its divisors is an integer number (66390066003).

Almost surely, 2^221300220005 is an apocalyptic number.

It is an amenable number.

221300220005 is a deficient number, since it is larger than the sum of its proper divisors (44260044007).

221300220005 is an equidigital number, since it uses as much as digits as its factorization.

221300220005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44260044006.

The product of its (nonzero) digits is 240, while the sum is 17.

Adding to 221300220005 its reverse (500022003122), we get a palindrome (721322223127).

The spelling of 221300220005 in words is "two hundred twenty-one billion, three hundred million, two hundred twenty thousand, five".