20021002023 has 8 divisors (see below), whose sum is σ = 29121457536. Its totient is φ = 12133940600.

The previous prime is 20021002019. The next prime is 20021002033. The reversal of 20021002023 is 32020012002.

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 20021002023 - 2² = 20021002019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021002033) 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, 303348483 + ... + 303348548.

It is an arithmetic number, because the mean of its divisors is an integer number (3640182192).

Almost surely, 2^20021002023 is an apocalyptic number.

20021002023 is a deficient number, since it is larger than the sum of its proper divisors (9100455513).

20021002023 is a wasteful number, since it uses less digits than its factorization.

20021002023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606697045.

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20021002023 its reverse (32020012002), we get a palindrome (52041014025).

The spelling of 20021002023 in words is "twenty billion, twenty-one million, two thousand, twenty-three".