323303120000021 has 4 divisors (see below), whose sum is σ = 369489280000032. Its totient is φ = 277116960000012.

The previous prime is 323303120000011. The next prime is 323303120000039. The reversal of 323303120000021 is 120000021303323.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 323303120000021 - 2¹⁸ = 323303119737877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 323303119999948 and 323303120000002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323303120000011) 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, 23093079999995 + ... + 23093080000008.

It is an arithmetic number, because the mean of its divisors is an integer number (92372320000008).

Almost surely, 2^{323303120000021} is an apocalyptic number.

It is an amenable number.

323303120000021 is a deficient number, since it is larger than the sum of its proper divisors (46186160000011).

323303120000021 is an equidigital number, since it uses as much as digits as its factorization.

323303120000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46186160000010.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 323303120000021 its reverse (120000021303323), we get a palindrome (443303141303344).

The spelling of 323303120000021 in words is "three hundred twenty-three trillion, three hundred three billion, one hundred twenty million, twenty-one", and thus it is an aban number.