1300321121221 has 2 divisors, whose sum is σ = 1300321121222. Its totient is φ = 1300321121220.

The previous prime is 1300321121213. The next prime is 1300321121233. The reversal of 1300321121221 is 1221211230031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1068661805121 + 231659316100 = 1033761^2 + 481310^2 .

It is a cyclic number.

It is not a de Polignac number, because 1300321121221 - 2³ = 1300321121213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1300321121261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650160560610 + 650160560611.

It is an arithmetic number, because the mean of its divisors is an integer number (650160560611).

Almost surely, 2^{1300321121221} is an apocalyptic number.

It is an amenable number.

1300321121221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1300321121221 is an equidigital number, since it uses as much as digits as its factorization.

1300321121221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1300321121221 its reverse (1221211230031), we get a palindrome (2521532351252).

The spelling of 1300321121221 in words is "one trillion, three hundred billion, three hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty-one".