20331123233321 has 4 divisors (see below), whose sum is σ = 20343966648192. Its totient is φ = 20318279818452.

The previous prime is 20331123233293. The next prime is 20331123233423. The reversal of 20331123233321 is 12333232113302.

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 20331123233321 - 2⁶ = 20331123233257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331123283321) 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, 6421705061 + ... + 6421708226.

It is an arithmetic number, because the mean of its divisors is an integer number (5085991662048).

Almost surely, 2^{20331123233321} is an apocalyptic number.

It is an amenable number.

20331123233321 is a deficient number, since it is larger than the sum of its proper divisors (12843414871).

20331123233321 is a wasteful number, since it uses less digits than its factorization.

20331123233321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12843414870.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 20331123233321 its reverse (12333232113302), we get a palindrome (32664355346623).

The spelling of 20331123233321 in words is "twenty trillion, three hundred thirty-one billion, one hundred twenty-three million, two hundred thirty-three thousand, three hundred twenty-one".