10002201221 has 2 divisors, whose sum is σ = 10002201222. Its totient is φ = 10002201220.

The previous prime is 10002201203. The next prime is 10002201227. The reversal of 10002201221 is 12210220001.

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., 9479164321 + 523036900 = 97361^2 + 22870^2 .

It is a cyclic number.

It is not a de Polignac number, because 10002201221 - 2¹⁴ = 10002184837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10002201227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001100610 + 5001100611.

It is an arithmetic number, because the mean of its divisors is an integer number (5001100611).

Almost surely, 2^10002201221 is an apocalyptic number.

It is an amenable number.

10002201221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10002201221 is an equidigital number, since it uses as much as digits as its factorization.

10002201221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10002201221 its reverse (12210220001), we get a palindrome (22212421222).

The spelling of 10002201221 in words is "ten billion, two million, two hundred one thousand, two hundred twenty-one".