200122202121 has 4 divisors (see below), whose sum is σ = 266829602832. Its totient is φ = 133414801412.

The previous prime is 200122202099. The next prime is 200122202167. The reversal of 200122202121 is 121202221002.

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 200122202121 - 2¹⁵ = 200122169353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200122202121.

It is not an unprimeable number, because it can be changed into a prime (200122202191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33353700351 + ... + 33353700356.

It is an arithmetic number, because the mean of its divisors is an integer number (66707400708).

Almost surely, 2^200122202121 is an apocalyptic number.

It is an amenable number.

200122202121 is a deficient number, since it is larger than the sum of its proper divisors (66707400711).

200122202121 is an equidigital number, since it uses as much as digits as its factorization.

200122202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66707400710.

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

Adding to 200122202121 its reverse (121202221002), we get a palindrome (321324423123).

The spelling of 200122202121 in words is "two hundred billion, one hundred twenty-two million, two hundred two thousand, one hundred twenty-one".