23011103221 has 2 divisors, whose sum is σ = 23011103222. Its totient is φ = 23011103220.

The previous prime is 23011103201. The next prime is 23011103263. The reversal of 23011103221 is 12230111032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17782222500 + 5228880721 = 133350^2 + 72311^2 .

It is a cyclic number.

It is not a de Polignac number, because 23011103221 - 2⁵ = 23011103189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23011103195 and 23011103204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23011103201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11505551610 + 11505551611.

It is an arithmetic number, because the mean of its divisors is an integer number (11505551611).

Almost surely, 2^23011103221 is an apocalyptic number.

It is an amenable number.

23011103221 is a deficient number, since it is larger than the sum of its proper divisors (1).

23011103221 is an equidigital number, since it uses as much as digits as its factorization.

23011103221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 23011103221 its reverse (12230111032), we get a palindrome (35241214253).

The spelling of 23011103221 in words is "twenty-three billion, eleven million, one hundred three thousand, two hundred twenty-one".