21323122122132 has 72 divisors (see below), whose sum is σ = 54660492798912. Its totient is φ = 7007442153600.

The previous prime is 21323122122103. The next prime is 21323122122157. The reversal of 21323122122132 is 23122122132312.

21323122122132 is a `hidden beast` number, since 2 + 1 + 3 + 2 + 312 + 212 + 2 + 132 = 666.

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 = 21323122122096 and 21323122122105.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 190215163 + ... + 190327229.

It is an arithmetic number, because the mean of its divisors is an integer number (759173511096).

Almost surely, 2^{21323122122132} is an apocalyptic number.

It is an amenable number.

21323122122132 is an abundant number, since it is smaller than the sum of its proper divisors (33337370676780).

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

21323122122132 is a wasteful number, since it uses less digits than its factorization.

21323122122132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186589 (or 186584 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 21323122122132 its reverse (23122122132312), we get a palindrome (44445244254444).

The spelling of 21323122122132 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred thirty-two".