223323122161 has 2 divisors, whose sum is σ = 223323122162. Its totient is φ = 223323122160.

The previous prime is 223323122159. The next prime is 223323122219. The reversal of 223323122161 is 161221323322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222203818225 + 1119303936 = 471385^2 + 33456^2 .

It is a cyclic number.

It is not a de Polignac number, because 223323122161 - 2¹ = 223323122159 is a prime.

Together with 223323122159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (223323125161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111661561080 + 111661561081.

It is an arithmetic number, because the mean of its divisors is an integer number (111661561081).

Almost surely, 2^223323122161 is an apocalyptic number.

It is an amenable number.

223323122161 is a deficient number, since it is larger than the sum of its proper divisors (1).

223323122161 is an equidigital number, since it uses as much as digits as its factorization.

223323122161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 28.

Adding to 223323122161 its reverse (161221323322), we get a palindrome (384544445483).

The spelling of 223323122161 in words is "two hundred twenty-three billion, three hundred twenty-three million, one hundred twenty-two thousand, one hundred sixty-one".