200122202120221 has 4 divisors (see below), whose sum is σ = 201893195059452. Its totient is φ = 198351209180992.

The previous prime is 200122202120161. The next prime is 200122202120329. The reversal of 200122202120221 is 122021202221002.

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 94993989348196 + 105128212772025 = 9746486^2 + 10253205^2 .

It is a cyclic number.

It is not a de Polignac number, because 200122202120221 - 2¹⁹ = 200122201595933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200122202120521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885496469446 + ... + 885496469671.

It is an arithmetic number, because the mean of its divisors is an integer number (50473298764863).

Almost surely, 2^{200122202120221} is an apocalyptic number.

It is an amenable number.

200122202120221 is a deficient number, since it is larger than the sum of its proper divisors (1770992939231).

200122202120221 is a wasteful number, since it uses less digits than its factorization.

200122202120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770992939230.

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

Adding to 200122202120221 its reverse (122021202221002), we get a palindrome (322143404341223).

The spelling of 200122202120221 in words is "two hundred trillion, one hundred twenty-two billion, two hundred two million, one hundred twenty thousand, two hundred twenty-one".