1213312221301 has 2 divisors, whose sum is σ = 1213312221302. Its totient is φ = 1213312221300.

The previous prime is 1213312221299. The next prime is 1213312221349. The reversal of 1213312221301 is 1031222133121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1104498004401 + 108814216900 = 1050951^2 + 329870^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213312221301 - 2¹ = 1213312221299 is a prime.

Together with 1213312221299, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213312221001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606656110650 + 606656110651.

It is an arithmetic number, because the mean of its divisors is an integer number (606656110651).

Almost surely, 2^{1213312221301} is an apocalyptic number.

It is an amenable number.

1213312221301 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213312221301 is an equidigital number, since it uses as much as digits as its factorization.

1213312221301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1213312221301 its reverse (1031222133121), we get a palindrome (2244534354422).

The spelling of 1213312221301 in words is "one trillion, two hundred thirteen billion, three hundred twelve million, two hundred twenty-one thousand, three hundred one".