23303200000021 has 4 divisors (see below), whose sum is σ = 23303458208844. Its totient is φ = 23302941791200.

The previous prime is 23303200000001. The next prime is 23303200000037. The reversal of 23303200000021 is 12000000230332.

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 4292815191921 + 19010384808100 = 2071911^2 + 4360090^2 .

It is a cyclic number.

It is not a de Polignac number, because 23303200000021 - 2¹³ = 23303199991829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23303199999950 and 23303200000004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23303200000001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128968990 + ... + 129149551.

It is an arithmetic number, because the mean of its divisors is an integer number (5825864552211).

Almost surely, 2^{23303200000021} is an apocalyptic number.

It is an amenable number.

23303200000021 is a deficient number, since it is larger than the sum of its proper divisors (258208823).

23303200000021 is an equidigital number, since it uses as much as digits as its factorization.

23303200000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258208822.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 23303200000021 its reverse (12000000230332), we get a palindrome (35303200230353).

The spelling of 23303200000021 in words is "twenty-three trillion, three hundred three billion, two hundred million, twenty-one", and thus it is an aban number.