210000122010221 has 2 divisors, whose sum is σ = 210000122010222. Its totient is φ = 210000122010220.

The previous prime is 210000122010187. The next prime is 210000122010227. The reversal of 210000122010221 is 122010221000012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180069265782121 + 29930856228100 = 13418989^2 + 5470910^2 .

It is a cyclic number.

It is not a de Polignac number, because 210000122010221 - 2⁶ = 210000122010157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210000122010196 and 210000122010205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210000122010227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000061005110 + 105000061005111.

It is an arithmetic number, because the mean of its divisors is an integer number (105000061005111).

Almost surely, 2^{210000122010221} is an apocalyptic number.

It is an amenable number.

210000122010221 is a deficient number, since it is larger than the sum of its proper divisors (1).

210000122010221 is an equidigital number, since it uses as much as digits as its factorization.

210000122010221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210000122010221 its reverse (122010221000012), we get a palindrome (332010343010233).

The spelling of 210000122010221 in words is "two hundred ten trillion, one hundred twenty-two million, ten thousand, two hundred twenty-one".