23033111013221 has 2 divisors, whose sum is σ = 23033111013222. Its totient is φ = 23033111013220.

The previous prime is 23033111013173. The next prime is 23033111013307. The reversal of 23033111013221 is 12231011133032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21562928088100 + 1470182925121 = 4643590^2 + 1212511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23033111013221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23033116013221) 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, 11516555506610 + 11516555506611.

It is an arithmetic number, because the mean of its divisors is an integer number (11516555506611).

Almost surely, 2^{23033111013221} is an apocalyptic number.

It is an amenable number.

23033111013221 is a deficient number, since it is larger than the sum of its proper divisors (1).

23033111013221 is an equidigital number, since it uses as much as digits as its factorization.

23033111013221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 23033111013221 its reverse (12231011133032), we get a palindrome (35264122146253).

The spelling of 23033111013221 in words is "twenty-three trillion, thirty-three billion, one hundred eleven million, thirteen thousand, two hundred twenty-one".