1313330440221 has 6 divisors (see below), whose sum is σ = 1897032858110. Its totient is φ = 875553626808.

The previous prime is 1313330440199. The next prime is 1313330440241. The reversal of 1313330440221 is 1220440333131.

It is a happy number.

1313330440221 is a `hidden beast` number, since 1 + 3 + 133 + 304 + 4 + 0 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1291664072196 + 21666368025 = 1136514^2 + 147195^2 .

It is not a de Polignac number, because 1313330440221 - 2⁶ = 1313330440157 is a prime.

It is a super-2 number, since 2×1313330440221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313330440241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72962802226 + ... + 72962802243.

Almost surely, 2^{1313330440221} is an apocalyptic number.

It is an amenable number.

1313330440221 is a deficient number, since it is larger than the sum of its proper divisors (583702417889).

1313330440221 is a wasteful number, since it uses less digits than its factorization.

1313330440221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145925604475 (or 145925604472 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 1313330440221 its reverse (1220440333131), we get a palindrome (2533770773352).

The spelling of 1313330440221 in words is "one trillion, three hundred thirteen billion, three hundred thirty million, four hundred forty thousand, two hundred twenty-one".