2020221221201 has 2 divisors, whose sum is σ = 2020221221202. Its totient is φ = 2020221221200.

The previous prime is 2020221221189. The next prime is 2020221221231. The reversal of 2020221221201 is 1021221220202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1564623220801 + 455598000400 = 1250849^2 + 674980^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020221221201 - 2¹⁴ = 2020221204817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2020221221201.

It is not a weakly prime, because it can be changed into another prime (2020221221231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010110610600 + 1010110610601.

It is an arithmetic number, because the mean of its divisors is an integer number (1010110610601).

Almost surely, 2^{2020221221201} is an apocalyptic number.

It is an amenable number.

2020221221201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020221221201 is an equidigital number, since it uses as much as digits as its factorization.

2020221221201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2020221221201 its reverse (1021221220202), we get a palindrome (3041442441403).

Subtracting from 2020221221201 its reverse (1021221220202), we obtain a palindrome (999000000999).

It can be divided in two parts, 2020221 and 221201, that added together give a palindrome (2241422).

The spelling of 2020221221201 in words is "two trillion, twenty billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred one".