10212022211221 has 2 divisors, whose sum is σ = 10212022211222. Its totient is φ = 10212022211220.

The previous prime is 10212022211021. The next prime is 10212022211227. The reversal of 10212022211221 is 12211222021201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10132603080625 + 79419130596 = 3183175^2 + 281814^2 .

It is a cyclic number.

It is not a de Polignac number, because 10212022211221 - 2²⁵ = 10211988656789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10212022211227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106011105610 + 5106011105611.

It is an arithmetic number, because the mean of its divisors is an integer number (5106011105611).

Almost surely, 2^{10212022211221} is an apocalyptic number.

It is an amenable number.

10212022211221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212022211221 is an equidigital number, since it uses as much as digits as its factorization.

10212022211221 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 19.

Adding to 10212022211221 its reverse (12211222021201), we get a palindrome (22423244232422).

The spelling of 10212022211221 in words is "ten trillion, two hundred twelve billion, twenty-two million, two hundred eleven thousand, two hundred twenty-one".