1310013330221 has 4 divisors (see below), whose sum is σ = 1310033933244. Its totient is φ = 1309992727200.

The previous prime is 1310013330217. The next prime is 1310013330257. The reversal of 1310013330221 is 1220333100131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 329148901225 + 980864428996 = 573715^2 + 990386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310013330221 - 2² = 1310013330217 is a prime.

It is a super-2 number, since 2×1310013330221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1310013330193 and 1310013330202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310013300221) 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, 10205840 + ... + 10333401.

It is an arithmetic number, because the mean of its divisors is an integer number (327508483311).

Almost surely, 2^{1310013330221} is an apocalyptic number.

It is an amenable number.

1310013330221 is a deficient number, since it is larger than the sum of its proper divisors (20603023).

1310013330221 is an equidigital number, since it uses as much as digits as its factorization.

1310013330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20603022.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1310013330221 its reverse (1220333100131), we get a palindrome (2530346430352).

The spelling of 1310013330221 in words is "one trillion, three hundred ten billion, thirteen million, three hundred thirty thousand, two hundred twenty-one".