1313013102221 has 4 divisors (see below), whose sum is σ = 1319235913344. Its totient is φ = 1306790291100.

The previous prime is 1313013102211. The next prime is 1313013102223. The reversal of 1313013102221 is 1222013103131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313013102221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313013102193 and 1313013102202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313013102223) 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, 3111405245 + ... + 3111405666.

It is an arithmetic number, because the mean of its divisors is an integer number (329808978336).

Almost surely, 2^{1313013102221} is an apocalyptic number.

It is an amenable number.

1313013102221 is a deficient number, since it is larger than the sum of its proper divisors (6222811123).

1313013102221 is an equidigital number, since it uses as much as digits as its factorization.

1313013102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6222811122.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1313013102221 its reverse (1222013103131), we get a palindrome (2535026205352).

The spelling of 1313013102221 in words is "one trillion, three hundred thirteen billion, thirteen million, one hundred two thousand, two hundred twenty-one".