21333210120 has 48 divisors (see below), whose sum is σ = 69332934060. Its totient is φ = 5688855936.

The previous prime is 21333210061. The next prime is 21333210131. The reversal of 21333210120 is 2101233312.

21333210120 is a `hidden beast` number, since 2 + 1 + 333 + 210 + 120 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20689370244 + 643839876 = 143838^2 + 25374^2 .

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 = 21333210093 and 21333210102.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29629099 + ... + 29629818.

Almost surely, 2^21333210120 is an apocalyptic number.

21333210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21333210120 is an abundant number, since it is smaller than the sum of its proper divisors (47999723940).

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

21333210120 is a wasteful number, since it uses less digits than its factorization.

21333210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59258934 (or 59258927 counting only the distinct ones).

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

Adding to 21333210120 its reverse (2101233312), we get a palindrome (23434443432).

The spelling of 21333210120 in words is "twenty-one billion, three hundred thirty-three million, two hundred ten thousand, one hundred twenty".