1213321301 has 2 divisors, whose sum is σ = 1213321302. Its totient is φ = 1213321300.

The previous prime is 1213321267. The next prime is 1213321303. The reversal of 1213321301 is 1031233121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 925984900 + 287336401 = 30430^2 + 16951^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213321301 - 2⁶ = 1213321237 is a prime.

Together with 1213321303, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213321301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213321303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606660650 + 606660651.

It is an arithmetic number, because the mean of its divisors is an integer number (606660651).

Almost surely, 2^1213321301 is an apocalyptic number.

It is an amenable number.

1213321301 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213321301 is an equidigital number, since it uses as much as digits as its factorization.

1213321301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1213321301 is about 34832.7618916445. The cubic root of 1213321301 is about 1066.5763283627.

Adding to 1213321301 its reverse (1031233121), we get a palindrome (2244554422).

The spelling of 1213321301 in words is "one billion, two hundred thirteen million, three hundred twenty-one thousand, three hundred one".