21020220330000 has 100 divisors (see below), whose sum is σ = 67856074018128. Its totient is φ = 5605392080000.

The previous prime is 21020220329963. The next prime is 21020220330007. The reversal of 21020220330000 is 3302202012.

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-3 number, since 3×21020220330000³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (21020220330007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 350307006 + ... + 350367005.

Almost surely, 2^{21020220330000} is an apocalyptic number.

21020220330000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21020220330000 is an abundant number, since it is smaller than the sum of its proper divisors (46835853688128).

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

21020220330000 is an equidigital number, since it uses as much as digits as its factorization.

21020220330000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700674042 (or 700674021 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 21020220330000 its reverse (3302202012), we get a palindrome (21023522532012).

The spelling of 21020220330000 in words is "twenty-one trillion, twenty billion, two hundred twenty million, three hundred thirty thousand".