1221202302013 has 2 divisors, whose sum is σ = 1221202302014. Its totient is φ = 1221202302012.

The previous prime is 1221202302007. The next prime is 1221202302031. The reversal of 1221202302013 is 3102032021221.

Together with next prime (1221202302031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1216637678169 + 4564623844 = 1103013^2 + 67562^2 .

It is a cyclic number.

It is not a de Polignac number, because 1221202302013 - 2²⁵ = 1221168747581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221202392013) 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, 610601151006 + 610601151007.

It is an arithmetic number, because the mean of its divisors is an integer number (610601151007).

Almost surely, 2^{1221202302013} is an apocalyptic number.

It is an amenable number.

1221202302013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221202302013 is an equidigital number, since it uses as much as digits as its factorization.

1221202302013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1221202302013 its reverse (3102032021221), we get a palindrome (4323234323234).

The spelling of 1221202302013 in words is "one trillion, two hundred twenty-one billion, two hundred two million, three hundred two thousand, thirteen".