21333333132 has 36 divisors (see below), whose sum is σ = 54060440616. Its totient is φ = 7093372800.

The previous prime is 21333333113. The next prime is 21333333143. The reversal of 21333333132 is 23133333312.

21333333132 is a `hidden beast` number, since 2 + 13 + 3 + 333 + 313 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×21333333132² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21333333096 and 21333333105.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 724458 + ... + 753329.

It is an arithmetic number, because the mean of its divisors is an integer number (1501678906).

Almost surely, 2^21333333132 is an apocalyptic number.

It is an amenable number.

21333333132 is an abundant number, since it is smaller than the sum of its proper divisors (32727107484).

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

21333333132 is a wasteful number, since it uses less digits than its factorization.

21333333132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478198 (or 1478193 counting only the distinct ones).

The product of its digits is 8748, while the sum is 27.

Adding to 21333333132 its reverse (23133333312), we get a palindrome (44466666444).

The spelling of 21333333132 in words is "twenty-one billion, three hundred thirty-three million, three hundred thirty-three thousand, one hundred thirty-two".