1200200202221 has 2 divisors, whose sum is σ = 1200200202222. Its totient is φ = 1200200202220.

The previous prime is 1200200202199. The next prime is 1200200202287. The reversal of 1200200202221 is 1222020020021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1131700226596 + 68499975625 = 1063814^2 + 261725^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200200202221 - 2³⁰ = 1199126460397 is a prime.

It is a super-2 number, since 2×1200200202221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1200200202196 and 1200200202205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200200252221) 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 as a sum of consecutive naturals, namely, 600100101110 + 600100101111.

It is an arithmetic number, because the mean of its divisors is an integer number (600100101111).

Almost surely, 2^{1200200202221} is an apocalyptic number.

It is an amenable number.

1200200202221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200200202221 is an equidigital number, since it uses as much as digits as its factorization.

1200200202221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1200200202221 its reverse (1222020020021), we get a palindrome (2422220222242).

The spelling of 1200200202221 in words is "one trillion, two hundred billion, two hundred million, two hundred two thousand, two hundred twenty-one".