200000122221 has 4 divisors (see below), whose sum is σ = 266666829632. Its totient is φ = 133333414812.

The previous prime is 200000122211. The next prime is 200000122229. The reversal of 200000122221 is 122221000002.

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 not a de Polignac number, because 200000122221 - 2¹⁹ = 199999597933 is a prime.

It is a Duffinian number.

200000122221 is a modest number, since divided by 122221 gives 20 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 200000122197 and 200000122206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200000122229) 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, 33333353701 + ... + 33333353706.

It is an arithmetic number, because the mean of its divisors is an integer number (66666707408).

Almost surely, 2^200000122221 is an apocalyptic number.

It is an amenable number.

200000122221 is a deficient number, since it is larger than the sum of its proper divisors (66666707411).

200000122221 is an equidigital number, since it uses as much as digits as its factorization.

200000122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66666707410.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 200000122221 its reverse (122221000002), we get a palindrome (322221122223).

The spelling of 200000122221 in words is "two hundred billion, one hundred twenty-two thousand, two hundred twenty-one".