10202222102221 has 2 divisors, whose sum is σ = 10202222102222. Its totient is φ = 10202222102220.

The previous prime is 10202222102183. The next prime is 10202222102227. The reversal of 10202222102221 is 12220122220201.

10202222102221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5378971586121 + 4823250516100 = 2319261^2 + 2196190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10202222102221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10202222102227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101111051110 + 5101111051111.

It is an arithmetic number, because the mean of its divisors is an integer number (5101111051111).

Almost surely, 2^{10202222102221} is an apocalyptic number.

It is an amenable number.

10202222102221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202222102221 is an equidigital number, since it uses as much as digits as its factorization.

10202222102221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 10202222102221 its reverse (12220122220201), we get a palindrome (22422344322422).

The spelling of 10202222102221 in words is "ten trillion, two hundred two billion, two hundred twenty-two million, one hundred two thousand, two hundred twenty-one".