23212013320 has 64 divisors (see below), whose sum is σ = 53141184000. Its totient is φ = 9122995200.

The previous prime is 23212013269. The next prime is 23212013323. The reversal of 23212013320 is 2331021232.

It is not an unprimeable number, because it can be changed into a prime (23212013323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1063881 + ... + 1085479.

It is an arithmetic number, because the mean of its divisors is an integer number (830331000).

Almost surely, 2^23212013320 is an apocalyptic number.

23212013320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23212013320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26570592000).

23212013320 is an abundant number, since it is smaller than the sum of its proper divisors (29929170680).

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

23212013320 is a wasteful number, since it uses less digits than its factorization.

23212013320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22078 (or 22074 counting only the distinct ones).

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

Adding to 23212013320 its reverse (2331021232), we get a palindrome (25543034552).

The spelling of 23212013320 in words is "twenty-three billion, two hundred twelve million, thirteen thousand, three hundred twenty".