1201221022213 has 2 divisors, whose sum is σ = 1201221022214. Its totient is φ = 1201221022212.

The previous prime is 1201221022117. The next prime is 1201221022249. The reversal of 1201221022213 is 3122201221021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1138269208609 + 62951813604 = 1066897^2 + 250902^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201221022213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201221022513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600610511106 + 600610511107.

It is an arithmetic number, because the mean of its divisors is an integer number (600610511107).

Almost surely, 2^{1201221022213} is an apocalyptic number.

It is an amenable number.

1201221022213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201221022213 is an equidigital number, since it uses as much as digits as its factorization.

1201221022213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1201221022213 its reverse (3122201221021), we get a palindrome (4323422243234).

The spelling of 1201221022213 in words is "one trillion, two hundred one billion, two hundred twenty-one million, twenty-two thousand, two hundred thirteen".