20331000221023 has 4 divisors (see below), whose sum is σ = 20342813703408. Its totient is φ = 20319186738640.

The previous prime is 20331000220997. The next prime is 20331000221033. The reversal of 20331000221023 is 32012200013302.

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 20331000221023 - 2⁹ = 20331000220511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331000221033) 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, 5906738611 + ... + 5906742052.

It is an arithmetic number, because the mean of its divisors is an integer number (5085703425852).

Almost surely, 2^{20331000221023} is an apocalyptic number.

20331000221023 is a deficient number, since it is larger than the sum of its proper divisors (11813482385).

20331000221023 is a wasteful number, since it uses less digits than its factorization.

20331000221023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11813482384.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20331000221023 its reverse (32012200013302), we get a palindrome (52343200234325).

The spelling of 20331000221023 in words is "twenty trillion, three hundred thirty-one billion, two hundred twenty-one thousand, twenty-three".