23021330020 has 24 divisors (see below), whose sum is σ = 52063623864. Its totient is φ = 8500183296.

The previous prime is 23021330009. The next prime is 23021330021. The reversal of 23021330020 is 2003312032.

It can be written as a sum of positive squares in 4 ways, for example, as 82410084 + 22938919936 = 9078^2 + 151456^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23021329976 and 23021330003.

It is not an unprimeable number, because it can be changed into a prime (23021330021) 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, 44271529 + ... + 44272048.

It is an arithmetic number, because the mean of its divisors is an integer number (2169317661).

Almost surely, 2^23021330020 is an apocalyptic number.

23021330020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23021330020 is an abundant number, since it is smaller than the sum of its proper divisors (29042293844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23021330020 is a wasteful number, since it uses less digits than its factorization.

23021330020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88543599 (or 88543597 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 23021330020 its reverse (2003312032), we get a palindrome (25024642052).

The spelling of 23021330020 in words is "twenty-three billion, twenty-one million, three hundred thirty thousand, twenty".