10213102112221 has 2 divisors, whose sum is σ = 10213102112222. Its totient is φ = 10213102112220.

The previous prime is 10213102112207. The next prime is 10213102112243. The reversal of 10213102112221 is 12221120131201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6418343568025 + 3794758544196 = 2533445^2 + 1948014^2 .

It is a cyclic number.

It is not a de Polignac number, because 10213102112221 - 2⁷ = 10213102112093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10213102112921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106551056110 + 5106551056111.

It is an arithmetic number, because the mean of its divisors is an integer number (5106551056111).

Almost surely, 2^{10213102112221} is an apocalyptic number.

It is an amenable number.

10213102112221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10213102112221 is an equidigital number, since it uses as much as digits as its factorization.

10213102112221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 10213102112221 its reverse (12221120131201), we get a palindrome (22434222243422).

The spelling of 10213102112221 in words is "ten trillion, two hundred thirteen billion, one hundred two million, one hundred twelve thousand, two hundred twenty-one".