21030033202120 has 16 divisors (see below), whose sum is σ = 47317574704860. Its totient is φ = 8412013280832.

The previous prime is 21030033202099. The next prime is 21030033202163. The reversal of 21030033202120 is 2120233003012.

It can be written as a sum of positive squares in 2 ways, for example, as 20875157896356 + 154875305764 = 4568934^2 + 393542^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262875414987 + ... + 262875415066.

Almost surely, 2^{21030033202120} is an apocalyptic number.

21030033202120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21030033202120 is an abundant number, since it is smaller than the sum of its proper divisors (26287541502740).

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

21030033202120 is a wasteful number, since it uses less digits than its factorization.

21030033202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525750830064 (or 525750830060 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21030033202120 its reverse (2120233003012), we get a palindrome (23150266205132).

The spelling of 21030033202120 in words is "twenty-one trillion, thirty billion, thirty-three million, two hundred two thousand, one hundred twenty".