320002121023 has 4 divisors (see below), whose sum is σ = 344617668808. Its totient is φ = 295386573240.

The previous prime is 320002120993. The next prime is 320002121167. The reversal of 320002121023 is 320121200023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320002121023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320002120988 and 320002121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320002121323) 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, 12307773873 + ... + 12307773898.

It is an arithmetic number, because the mean of its divisors is an integer number (86154417202).

Almost surely, 2^320002121023 is an apocalyptic number.

320002121023 is a deficient number, since it is larger than the sum of its proper divisors (24615547785).

320002121023 is a wasteful number, since it uses less digits than its factorization.

320002121023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24615547784.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 320002121023 its reverse (320121200023), we get a palindrome (640123321046).

The spelling of 320002121023 in words is "three hundred twenty billion, two million, one hundred twenty-one thousand, twenty-three".