200202221201221 has 4 divisors (see below), whose sum is σ = 200213033026252. Its totient is φ = 200191409376192.

The previous prime is 200202221201089. The next prime is 200202221201291. The reversal of 200202221201221 is 122102122202002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52785470460321 + 147416750740900 = 7265361^2 + 12141530^2 .

It is a cyclic number.

It is not a de Polignac number, because 200202221201221 - 2²⁹ = 200201684330309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200202221201291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5405884740 + ... + 5405921773.

It is an arithmetic number, because the mean of its divisors is an integer number (50053258256563).

Almost surely, 2^{200202221201221} is an apocalyptic number.

It is an amenable number.

200202221201221 is a deficient number, since it is larger than the sum of its proper divisors (10811825031).

200202221201221 is a wasteful number, since it uses less digits than its factorization.

200202221201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10811825030.

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

Adding to 200202221201221 its reverse (122102122202002), we get a palindrome (322304343403223).

The spelling of 200202221201221 in words is "two hundred trillion, two hundred two billion, two hundred twenty-one million, two hundred one thousand, two hundred twenty-one".