200300121221 has 4 divisors (see below), whose sum is σ = 203043958572. Its totient is φ = 197556283872.

The previous prime is 200300121187. The next prime is 200300121247. The reversal of 200300121221 is 122121003002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122121003002 = 2 ⋅61060501501.

It can be written as a sum of positive squares in 2 ways, for example, as 167497840225 + 32802280996 = 409265^2 + 181114^2 .

It is not a de Polignac number, because 200300121221 - 2¹⁸ = 200299859077 is a prime.

It is a super-2 number, since 2×200300121221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200300121196 and 200300121205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200300121271) 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, 1371918566 + ... + 1371918711.

It is an arithmetic number, because the mean of its divisors is an integer number (50760989643).

Almost surely, 2^200300121221 is an apocalyptic number.

It is an amenable number.

200300121221 is a deficient number, since it is larger than the sum of its proper divisors (2743837351).

200300121221 is an equidigital number, since it uses as much as digits as its factorization.

200300121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743837350.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 200300121221 its reverse (122121003002), we get a palindrome (322421124223).

The spelling of 200300121221 in words is "two hundred billion, three hundred million, one hundred twenty-one thousand, two hundred twenty-one".