20023020011 has 24 divisors (see below), whose sum is σ = 20860519680. Its totient is φ = 19217296800.

The previous prime is 20023019999. The next prime is 20023020049. The reversal of 20023020011 is 11002032002.

It is a happy number.

It is not a de Polignac number, because 20023020011 - 2¹⁰ = 20023018987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20023019974 and 20023020001.

It is not an unprimeable number, because it can be changed into a prime (20023010011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55774250 + ... + 55774608.

It is an arithmetic number, because the mean of its divisors is an integer number (869188320).

Almost surely, 2^20023020011 is an apocalyptic number.

20023020011 is a deficient number, since it is larger than the sum of its proper divisors (837499669).

20023020011 is a wasteful number, since it uses less digits than its factorization.

20023020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875 (or 838 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20023020011 its reverse (11002032002), we get a palindrome (31025052013).

The spelling of 20023020011 in words is "twenty billion, twenty-three million, twenty thousand, eleven".