20020011233 has 32 divisors (see below), whose sum is σ = 21700638720. Its totient is φ = 18424806400.

The previous prime is 20020011229. The next prime is 20020011259. The reversal of 20020011233 is 33211002002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20020011233 - 2² = 20020011229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020011133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13911728 + ... + 13913166.

It is an arithmetic number, because the mean of its divisors is an integer number (678144960).

Almost surely, 2^20020011233 is an apocalyptic number.

20020011233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20020011233 is a deficient number, since it is larger than the sum of its proper divisors (1680627487).

20020011233 is a wasteful number, since it uses less digits than its factorization.

20020011233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20020011233 its reverse (33211002002), we get a palindrome (53231013235).

The spelling of 20020011233 in words is "twenty billion, twenty million, eleven thousand, two hundred thirty-three".