21303220300123 has 8 divisors (see below), whose sum is σ = 21341058881600. Its totient is φ = 21265384896000.

The previous prime is 21303220300073. The next prime is 21303220300151. The reversal of 21303220300123 is 32100302230312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21303220300123 - 2⁴¹ = 19104197044571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21303220300094 and 21303220300103.

It is not an unprimeable number, because it can be changed into a prime (21303220304123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12834373 + ... + 14398873.

It is an arithmetic number, because the mean of its divisors is an integer number (2667632360200).

Almost surely, 2^{21303220300123} is an apocalyptic number.

21303220300123 is a deficient number, since it is larger than the sum of its proper divisors (37838581477).

21303220300123 is a wasteful number, since it uses less digits than its factorization.

21303220300123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588677.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21303220300123 its reverse (32100302230312), we get a palindrome (53403522530435).

The spelling of 21303220300123 in words is "twenty-one trillion, three hundred three billion, two hundred twenty million, three hundred thousand, one hundred twenty-three".