1465614113221 has 2 divisors, whose sum is σ = 1465614113222. Its totient is φ = 1465614113220.

The previous prime is 1465614113219. The next prime is 1465614113231. The reversal of 1465614113221 is 1223114165641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1031087930625 + 434526182596 = 1015425^2 + 659186^2 .

It is a cyclic number.

It is not a de Polignac number, because 1465614113221 - 2¹ = 1465614113219 is a prime.

Together with 1465614113219, 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 (1465614113231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 732807056610 + 732807056611.

It is an arithmetic number, because the mean of its divisors is an integer number (732807056611).

Almost surely, 2^{1465614113221} is an apocalyptic number.

It is an amenable number.

1465614113221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1465614113221 is an equidigital number, since it uses as much as digits as its factorization.

1465614113221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 37.

Adding to 1465614113221 its reverse (1223114165641), we get a palindrome (2688728278862).

The spelling of 1465614113221 in words is "one trillion, four hundred sixty-five billion, six hundred fourteen million, one hundred thirteen thousand, two hundred twenty-one".