1222401253321 has 2 divisors, whose sum is σ = 1222401253322. Its totient is φ = 1222401253320.

The previous prime is 1222401253279. The next prime is 1222401253361. The reversal of 1222401253321 is 1233521042221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 939338948025 + 283062305296 = 969195^2 + 532036^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222401253321 - 2¹⁵ = 1222401220553 is a prime.

It is a super-2 number, since 2×1222401253321² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1222401253321.

It is not a weakly prime, because it can be changed into another prime (1222401253361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611200626660 + 611200626661.

It is an arithmetic number, because the mean of its divisors is an integer number (611200626661).

Almost surely, 2^{1222401253321} is an apocalyptic number.

It is an amenable number.

1222401253321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222401253321 is an equidigital number, since it uses as much as digits as its factorization.

1222401253321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 1222401253321 its reverse (1233521042221), we get a palindrome (2455922295542).

The spelling of 1222401253321 in words is "one trillion, two hundred twenty-two billion, four hundred one million, two hundred fifty-three thousand, three hundred twenty-one".