23212104520 has 64 divisors (see below), whose sum is σ = 57026851200. Its totient is φ = 8433108480.

The previous prime is 23212104497. The next prime is 23212104529. The reversal of 23212104520 is 2540121232.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 23212104491 and 23212104500.

It is not an unprimeable number, because it can be changed into a prime (23212104529) 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, 473397 + ... + 520123.

It is an arithmetic number, because the mean of its divisors is an integer number (891044550).

Almost surely, 2^23212104520 is an apocalyptic number.

23212104520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23212104520 is an abundant number, since it is smaller than the sum of its proper divisors (33814746680).

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

23212104520 is a wasteful number, since it uses less digits than its factorization.

23212104520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47878 (or 47874 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 23212104520 its reverse (2540121232), we get a palindrome (25752225752).

The spelling of 23212104520 in words is "twenty-three billion, two hundred twelve million, one hundred four thousand, five hundred twenty".