21000332203020 has 36 divisors (see below), whose sum is σ = 63701007683040. Its totient is φ = 5600088587424.

The previous prime is 21000332202977. The next prime is 21000332203021. The reversal of 21000332203020 is 2030223300012.

It is a happy number.

21000332203020 is a `hidden beast` number, since 2 + 10 + 0 + 0 + 332 + 20 + 302 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 21000332202984 and 21000332203002.

It is not an unprimeable number, because it can be changed into a prime (21000332203021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58334255940 + ... + 58334256299.

It is an arithmetic number, because the mean of its divisors is an integer number (1769472435640).

Almost surely, 2^{21000332203020} is an apocalyptic number.

21000332203020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21000332203020 is an abundant number, since it is smaller than the sum of its proper divisors (42700675480020).

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

21000332203020 is a wasteful number, since it uses less digits than its factorization.

21000332203020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116668512254 (or 116668512249 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21000332203020 its reverse (2030223300012), we get a palindrome (23030555503032).

The spelling of 21000332203020 in words is "twenty-one trillion, three hundred thirty-two million, two hundred three thousand, twenty".