23221130000221 has 2 divisors, whose sum is σ = 23221130000222. Its totient is φ = 23221130000220.

The previous prime is 23221130000219. The next prime is 23221130000227. The reversal of 23221130000221 is 12200003112232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17052885876196 + 6168244124025 = 4129514^2 + 2483595^2 .

It is a cyclic number.

It is not a de Polignac number, because 23221130000221 - 2¹ = 23221130000219 is a prime.

Together with 23221130000219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23221130000227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610565000110 + 11610565000111.

It is an arithmetic number, because the mean of its divisors is an integer number (11610565000111).

Almost surely, 2^{23221130000221} is an apocalyptic number.

It is an amenable number.

23221130000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

23221130000221 is an equidigital number, since it uses as much as digits as its factorization.

23221130000221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 23221130000221 its reverse (12200003112232), we get a palindrome (35421133112453).

The spelling of 23221130000221 in words is "twenty-three trillion, two hundred twenty-one billion, one hundred thirty million, two hundred twenty-one", and thus it is an aban number.