1220323112213 has 2 divisors, whose sum is σ = 1220323112214. Its totient is φ = 1220323112212.

The previous prime is 1220323112189. The next prime is 1220323112221. The reversal of 1220323112213 is 3122113230221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 918534393604 + 301788718609 = 958402^2 + 549353^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220323112213 - 2¹⁴ = 1220323095829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220323112243) 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, 610161556106 + 610161556107.

It is an arithmetic number, because the mean of its divisors is an integer number (610161556107).

Almost surely, 2^{1220323112213} is an apocalyptic number.

It is an amenable number.

1220323112213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220323112213 is an equidigital number, since it uses as much as digits as its factorization.

1220323112213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1220323112213 its reverse (3122113230221), we get a palindrome (4342436342434).

The spelling of 1220323112213 in words is "one trillion, two hundred twenty billion, three hundred twenty-three million, one hundred twelve thousand, two hundred thirteen".