1301332301221 has 2 divisors, whose sum is σ = 1301332301222. Its totient is φ = 1301332301220.

The previous prime is 1301332301207. The next prime is 1301332301281. The reversal of 1301332301221 is 1221032331031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 795119973025 + 506212328196 = 891695^2 + 711486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1301332301221 is a prime.

It is a super-2 number, since 2×1301332301221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1301332301192 and 1301332301201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1301332301281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650666150610 + 650666150611.

It is an arithmetic number, because the mean of its divisors is an integer number (650666150611).

Almost surely, 2^{1301332301221} is an apocalyptic number.

It is an amenable number.

1301332301221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301332301221 is an equidigital number, since it uses as much as digits as its factorization.

1301332301221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1301332301221 its reverse (1221032331031), we get a palindrome (2522364632252).

The spelling of 1301332301221 in words is "one trillion, three hundred one billion, three hundred thirty-two million, three hundred one thousand, two hundred twenty-one".