23343617221 has 4 divisors (see below), whose sum is σ = 23353523532. Its totient is φ = 23333710912.

The previous prime is 23343617203. The next prime is 23343617249. The reversal of 23343617221 is 12271634332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8609056225 + 14734560996 = 92785^2 + 121386^2 .

It is a cyclic number.

It is not a de Polignac number, because 23343617221 - 2¹¹ = 23343615173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23343617281) 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 in 3 ways as a sum of consecutive naturals, for example, 4949620 + ... + 4954333.

It is an arithmetic number, because the mean of its divisors is an integer number (5838380883).

Almost surely, 2^23343617221 is an apocalyptic number.

It is an amenable number.

23343617221 is a deficient number, since it is larger than the sum of its proper divisors (9906311).

23343617221 is an equidigital number, since it uses as much as digits as its factorization.

23343617221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9906310.

The product of its digits is 36288, while the sum is 34.

The spelling of 23343617221 in words is "twenty-three billion, three hundred forty-three million, six hundred seventeen thousand, two hundred twenty-one".