200200001221 has 4 divisors (see below), whose sum is σ = 218400001344. Its totient is φ = 182000001100.

The previous prime is 200200001201. The next prime is 200200001233. The reversal of 200200001221 is 122100002002.

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 200200001221 - 2²³ = 200191612613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200200001198 and 200200001207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200200001201) 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, 9100000045 + ... + 9100000066.

It is an arithmetic number, because the mean of its divisors is an integer number (54600000336).

Almost surely, 2^200200001221 is an apocalyptic number.

It is an amenable number.

200200001221 is a deficient number, since it is larger than the sum of its proper divisors (18200000123).

200200001221 is a wasteful number, since it uses less digits than its factorization.

200200001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18200000122.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 200200001221 its reverse (122100002002), we get a palindrome (322300003223).

The spelling of 200200001221 in words is "two hundred billion, two hundred million, one thousand, two hundred twenty-one".