10202202202121 has 2 divisors, whose sum is σ = 10202202202122. Its totient is φ = 10202202202120.

The previous prime is 10202202202021. The next prime is 10202202202139. The reversal of 10202202202121 is 12120220220201.

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., 10201763760400 + 438441721 = 3194020^2 + 20939^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10202202202121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10202202202121.

It is not a weakly prime, because it can be changed into another prime (10202202202021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101101101060 + 5101101101061.

It is an arithmetic number, because the mean of its divisors is an integer number (5101101101061).

Almost surely, 2^{10202202202121} is an apocalyptic number.

It is an amenable number.

10202202202121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202202202121 is an equidigital number, since it uses as much as digits as its factorization.

10202202202121 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 10202202202121 its reverse (12120220220201), we get a palindrome (22322422422322).

The spelling of 10202202202121 in words is "ten trillion, two hundred two billion, two hundred two million, two hundred two thousand, one hundred twenty-one".