20210133020221 has 2 divisors, whose sum is σ = 20210133020222. Its totient is φ = 20210133020220.

The previous prime is 20210133020179. The next prime is 20210133020281. The reversal of 20210133020221 is 12202033101202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20195766360900 + 14366659321 = 4493970^2 + 119861^2 .

It is a cyclic number.

It is not a de Polignac number, because 20210133020221 - 2¹⁵ = 20210132987453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20210133020281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105066510110 + 10105066510111.

It is an arithmetic number, because the mean of its divisors is an integer number (10105066510111).

Almost surely, 2^{20210133020221} is an apocalyptic number.

It is an amenable number.

20210133020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210133020221 is an equidigital number, since it uses as much as digits as its factorization.

20210133020221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20210133020221 its reverse (12202033101202), we get a palindrome (32412166121423).

The spelling of 20210133020221 in words is "twenty trillion, two hundred ten billion, one hundred thirty-three million, twenty thousand, two hundred twenty-one".