202221000010221 has 4 divisors (see below), whose sum is σ = 269628000013632. Its totient is φ = 134814000006812.

The previous prime is 202221000010079. The next prime is 202221000010291. The reversal of 202221000010221 is 122010000122202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202221000010221 - 2¹⁸ = 202220999748077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202221000010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221000010291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33703500001701 + ... + 33703500001706.

It is an arithmetic number, because the mean of its divisors is an integer number (67407000003408).

Almost surely, 2^{202221000010221} is an apocalyptic number.

It is an amenable number.

202221000010221 is a deficient number, since it is larger than the sum of its proper divisors (67407000003411).

202221000010221 is an equidigital number, since it uses as much as digits as its factorization.

202221000010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67407000003410.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202221000010221 its reverse (122010000122202), we get a palindrome (324231000132423).

The spelling of 202221000010221 in words is "two hundred two trillion, two hundred twenty-one billion, ten thousand, two hundred twenty-one".