20330200012021 has 2 divisors, whose sum is σ = 20330200012022. Its totient is φ = 20330200012020.

The previous prime is 20330200012013. The next prime is 20330200012049. The reversal of 20330200012021 is 12021000203302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10528980135921 + 9801219876100 = 3244839^2 + 3130690^2 .

It is a cyclic number.

It is not a de Polignac number, because 20330200012021 - 2³ = 20330200012013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20330200011986 and 20330200012004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20330200012081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165100006010 + 10165100006011.

It is an arithmetic number, because the mean of its divisors is an integer number (10165100006011).

Almost surely, 2^{20330200012021} is an apocalyptic number.

It is an amenable number.

20330200012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

20330200012021 is an equidigital number, since it uses as much as digits as its factorization.

20330200012021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20330200012021 its reverse (12021000203302), we get a palindrome (32351200215323).

The spelling of 20330200012021 in words is "twenty trillion, three hundred thirty billion, two hundred million, twelve thousand, twenty-one".