21133323232 has 24 divisors (see below), whose sum is σ = 47549977776. Its totient is φ = 9057138432.

The previous prime is 21133323209. The next prime is 21133323241. The reversal of 21133323232 is 23232333112.

It is a junction number, because it is equal to n+sod(n) for n = 21133323197 and 21133323206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47172373 + ... + 47172820.

It is an arithmetic number, because the mean of its divisors is an integer number (1981249074).

Almost surely, 2^21133323232 is an apocalyptic number.

It is an amenable number.

21133323232 is an abundant number, since it is smaller than the sum of its proper divisors (26416654544).

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

21133323232 is an equidigital number, since it uses as much as digits as its factorization.

21133323232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94345210 (or 94345202 counting only the distinct ones).

The product of its digits is 3888, while the sum is 25.

Adding to 21133323232 its reverse (23232333112), we get a palindrome (44365656344).

The spelling of 21133323232 in words is "twenty-one billion, one hundred thirty-three million, three hundred twenty-three thousand, two hundred thirty-two".