1221313210301 has 2 divisors, whose sum is σ = 1221313210302. Its totient is φ = 1221313210300.

The previous prime is 1221313210297. The next prime is 1221313210319. The reversal of 1221313210301 is 1030123131221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1145272390276 + 76040820025 = 1070174^2 + 275755^2 .

It is a cyclic number.

It is not a de Polignac number, because 1221313210301 - 2² = 1221313210297 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221313210361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610656605150 + 610656605151.

It is an arithmetic number, because the mean of its divisors is an integer number (610656605151).

Almost surely, 2^{1221313210301} is an apocalyptic number.

It is an amenable number.

1221313210301 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221313210301 is an equidigital number, since it uses as much as digits as its factorization.

1221313210301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1221313210301 its reverse (1030123131221), we get a palindrome (2251436341522).

The spelling of 1221313210301 in words is "one trillion, two hundred twenty-one billion, three hundred thirteen million, two hundred ten thousand, three hundred one".