20021001323023 has 8 divisors (see below), whose sum is σ = 20652934082480. Its totient is φ = 19398865970880.

The previous prime is 20021001322981. The next prime is 20021001323053. The reversal of 20021001323023 is 32032310012002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20021001323023 - 2²⁵ = 20020967768591 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 (20021001323053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2449347678 + ... + 2449355851.

It is an arithmetic number, because the mean of its divisors is an integer number (2581616760310).

Almost surely, 2^{20021001323023} is an apocalyptic number.

20021001323023 is a deficient number, since it is larger than the sum of its proper divisors (631932759457).

20021001323023 is an equidigital number, since it uses as much as digits as its factorization.

20021001323023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4898703657.

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

Adding to 20021001323023 its reverse (32032310012002), we get a palindrome (52053311335025).

The spelling of 20021001323023 in words is "twenty trillion, twenty-one billion, one million, three hundred twenty-three thousand, twenty-three".