21303132120 has 96 divisors (see below), whose sum is σ = 72879159600. Its totient is φ = 5381842176.

The previous prime is 21303132107. The next prime is 21303132131. The reversal of 21303132120 is 2123130312.

21303132120 is a `hidden beast` number, since 21 + 303 + 1 + 321 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21303132093 and 21303132102.

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, 1550407 + ... + 1564086.

Almost surely, 2^21303132120 is an apocalyptic number.

21303132120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21303132120 is an abundant number, since it is smaller than the sum of its proper divisors (51576027480).

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

21303132120 is a wasteful number, since it uses less digits than its factorization.

21303132120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3114529 (or 3114522 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21303132120 its reverse (2123130312), we get a palindrome (23426262432).

The spelling of 21303132120 in words is "twenty-one billion, three hundred three million, one hundred thirty-two thousand, one hundred twenty".