20210211122201 has 2 divisors, whose sum is σ = 20210211122202. Its totient is φ = 20210211122200.

The previous prime is 20210211122159. The next prime is 20210211122203. The reversal of 20210211122201 is 10222111201202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20172000255625 + 38210866576 = 4491325^2 + 195476^2 .

It is a cyclic number.

It is not a de Polignac number, because 20210211122201 - 2⁴² = 15812164611097 is a prime.

It is a Sophie Germain prime.

Together with 20210211122203, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20210211122201.

It is not a weakly prime, because it can be changed into another prime (20210211122203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105105561100 + 10105105561101.

It is an arithmetic number, because the mean of its divisors is an integer number (10105105561101).

Almost surely, 2^{20210211122201} is an apocalyptic number.

It is an amenable number.

20210211122201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210211122201 is an equidigital number, since it uses as much as digits as its factorization.

20210211122201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20210211122201 its reverse (10222111201202), we get a palindrome (30432322323403).

The spelling of 20210211122201 in words is "twenty trillion, two hundred ten billion, two hundred eleven million, one hundred twenty-two thousand, two hundred one".