20331321301223 has 4 divisors (see below), whose sum is σ = 20987170375488. Its totient is φ = 19675472226960.

The previous prime is 20331321301183. The next prime is 20331321301253. The reversal of 20331321301223 is 32210312313302.

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

It is a cyclic number.

It is not a de Polignac number, because 20331321301223 - 2²⁰ = 20331320252647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20331321301192 and 20331321301201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331321301253) 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, 327924537086 + ... + 327924537147.

It is an arithmetic number, because the mean of its divisors is an integer number (5246792593872).

Almost surely, 2^{20331321301223} is an apocalyptic number.

20331321301223 is a deficient number, since it is larger than the sum of its proper divisors (655849074265).

20331321301223 is an equidigital number, since it uses as much as digits as its factorization.

20331321301223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655849074264.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 20331321301223 its reverse (32210312313302), we get a palindrome (52541633614525).

The spelling of 20331321301223 in words is "twenty trillion, three hundred thirty-one billion, three hundred twenty-one million, three hundred one thousand, two hundred twenty-three".