220344224161 has 2 divisors, whose sum is σ = 220344224162. Its totient is φ = 220344224160.

The previous prime is 220344224159. The next prime is 220344224171. The reversal of 220344224161 is 161422443022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186693990561 + 33650233600 = 432081^2 + 183440^2 .

It is a cyclic number.

It is not a de Polignac number, because 220344224161 - 2¹ = 220344224159 is a prime.

It is a super-2 number, since 2×220344224161² (a number of 23 digits) contains 22 as substring.

Together with 220344224159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (220344224171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110172112080 + 110172112081.

It is an arithmetic number, because the mean of its divisors is an integer number (110172112081).

Almost surely, 2^220344224161 is an apocalyptic number.

It is an amenable number.

220344224161 is a deficient number, since it is larger than the sum of its proper divisors (1).

220344224161 is an equidigital number, since it uses as much as digits as its factorization.

220344224161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 220344224161 its reverse (161422443022), we get a palindrome (381766667183).

The spelling of 220344224161 in words is "two hundred twenty billion, three hundred forty-four million, two hundred twenty-four thousand, one hundred sixty-one".