21111330324132 has 96 divisors (see below), whose sum is σ = 55147914339840. Its totient is φ = 6983802650880.

The previous prime is 21111330324121. The next prime is 21111330324167. The reversal of 21111330324132 is 23142303311112.

21111330324132 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 1 + 330 + 324 + 1 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21111330324096 and 21111330324105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53527798 + ... + 53920754.

It is an arithmetic number, because the mean of its divisors is an integer number (574457441040).

Almost surely, 2^{21111330324132} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21111330324132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27573957169920).

21111330324132 is an abundant number, since it is smaller than the sum of its proper divisors (34036584015708).

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

21111330324132 is a wasteful number, since it uses less digits than its factorization.

21111330324132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396738 (or 396730 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 21111330324132 its reverse (23142303311112), we get a palindrome (44253633635244).

The spelling of 21111330324132 in words is "twenty-one trillion, one hundred eleven billion, three hundred thirty million, three hundred twenty-four thousand, one hundred thirty-two".