212020201002221 has 2 divisors, whose sum is σ = 212020201002222. Its totient is φ = 212020201002220.

The previous prime is 212020201002217. The next prime is 212020201002223. The reversal of 212020201002221 is 122200102020212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195714643938025 + 16305557064196 = 13989805^2 + 4038014^2 .

It is a cyclic number.

It is not a de Polignac number, because 212020201002221 - 2² = 212020201002217 is a prime.

Together with 212020201002223, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212020201002221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212020201002223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010100501110 + 106010100501111.

It is an arithmetic number, because the mean of its divisors is an integer number (106010100501111).

Almost surely, 2^{212020201002221} is an apocalyptic number.

It is an amenable number.

212020201002221 is a deficient number, since it is larger than the sum of its proper divisors (1).

212020201002221 is an equidigital number, since it uses as much as digits as its factorization.

212020201002221 is an odious number, because the sum of its binary digits is odd.

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

Adding to 212020201002221 its reverse (122200102020212), we get a palindrome (334220303022433).

The spelling of 212020201002221 in words is "two hundred twelve trillion, twenty billion, two hundred one million, two thousand, two hundred twenty-one".