202201002201221 has 2 divisors, whose sum is σ = 202201002201222. Its totient is φ = 202201002201220.

The previous prime is 202201002201197. The next prime is 202201002201283. The reversal of 202201002201221 is 122102200102202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174348626524996 + 27852375676225 = 13204114^2 + 5277535^2 .

It is a cyclic number.

It is not a de Polignac number, because 202201002201221 - 2¹⁴ = 202201002184837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202201002201221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202201022201221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101100501100610 + 101100501100611.

It is an arithmetic number, because the mean of its divisors is an integer number (101100501100611).

Almost surely, 2^{202201002201221} is an apocalyptic number.

It is an amenable number.

202201002201221 is a deficient number, since it is larger than the sum of its proper divisors (1).

202201002201221 is an equidigital number, since it uses as much as digits as its factorization.

202201002201221 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 202201002201221 its reverse (122102200102202), we get a palindrome (324303202303423).

The spelling of 202201002201221 in words is "two hundred two trillion, two hundred one billion, two million, two hundred one thousand, two hundred twenty-one".