1305221370708 has 12 divisors (see below), whose sum is σ = 3045516531680. Its totient is φ = 435073790232.

The previous prime is 1305221370707. The next prime is 1305221370721. The reversal of 1305221370708 is 8070731225031.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305221370707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54384223768 + ... + 54384223791.

Almost surely, 2^{1305221370708} is an apocalyptic number.

It is an amenable number.

1305221370708 is an abundant number, since it is smaller than the sum of its proper divisors (1740295160972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1305221370708 is a wasteful number, since it uses less digits than its factorization.

1305221370708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108768447566 (or 108768447564 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

Adding to 1305221370708 its reverse (8070731225031), we get a palindrome (9375952595739).

The spelling of 1305221370708 in words is "one trillion, three hundred five billion, two hundred twenty-one million, three hundred seventy thousand, seven hundred eight".