23212333220 has 24 divisors (see below), whose sum is σ = 48757867704. Its totient is φ = 9282653696.

The previous prime is 23212333213. The next prime is 23212333223. The reversal of 23212333220 is 2233321232.

It can be written as a sum of positive squares in 4 ways, for example, as 9402793024 + 13809540196 = 96968^2 + 117514^2 .

It is not an unprimeable number, because it can be changed into a prime (23212333223) 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, 57749 + ... + 223068.

It is an arithmetic number, because the mean of its divisors is an integer number (2031577821).

Almost surely, 2^23212333220 is an apocalyptic number.

23212333220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23212333220 is an abundant number, since it is smaller than the sum of its proper divisors (25545534484).

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

23212333220 is a wasteful number, since it uses less digits than its factorization.

23212333220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284959 (or 284957 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 23212333220 its reverse (2233321232), we get a palindrome (25445654452).

The spelling of 23212333220 in words is "twenty-three billion, two hundred twelve million, three hundred thirty-three thousand, two hundred twenty".