1200202010221 has 2 divisors, whose sum is σ = 1200202010222. Its totient is φ = 1200202010220.

The previous prime is 1200202010153. The next prime is 1200202010239. The reversal of 1200202010221 is 1220102020021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 889741314121 + 310460696100 = 943261^2 + 557190^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200202010221 - 2²¹ = 1200199913069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200202010291) 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, 600101005110 + 600101005111.

It is an arithmetic number, because the mean of its divisors is an integer number (600101005111).

Almost surely, 2^{1200202010221} is an apocalyptic number.

It is an amenable number.

1200202010221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200202010221 is an equidigital number, since it uses as much as digits as its factorization.

1200202010221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1200202010221 its reverse (1220102020021), we get a palindrome (2420304030242).

The spelling of 1200202010221 in words is "one trillion, two hundred billion, two hundred two million, ten thousand, two hundred twenty-one".