21020033020120 has 32 divisors (see below), whose sum is σ = 47309914580400. Its totient is φ = 8405374935168.

The previous prime is 21020033020079. The next prime is 21020033020121. The reversal of 21020033020120 is 2102033002012.

21020033020120 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 21020033020094 and 21020033020103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020033020121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 82316955 + ... + 82571914.

Almost surely, 2^{21020033020120} is an apocalyptic number.

21020033020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21020033020120 is an abundant number, since it is smaller than the sum of its proper divisors (26289881560280).

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

21020033020120 is a wasteful number, since it uses less digits than its factorization.

21020033020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164892067 (or 164892063 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21020033020120 its reverse (2102033002012), we get a palindrome (23122066022132).

The spelling of 21020033020120 in words is "twenty-one trillion, twenty billion, thirty-three million, twenty thousand, one hundred twenty".