1313331020221 has 8 divisors (see below), whose sum is σ = 1432762236000. Its totient is φ = 1193906052240.

The previous prime is 1313331020203. The next prime is 1313331020251. The reversal of 1313331020221 is 1220201333131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1313331020221 - 2¹³ = 1313331012029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313331020192 and 1313331020201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313331020251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1116906 + ... + 1968283.

It is an arithmetic number, because the mean of its divisors is an integer number (179095279500).

Almost surely, 2^{1313331020221} is an apocalyptic number.

1313331020221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1313331020221 is a deficient number, since it is larger than the sum of its proper divisors (119431215779).

1313331020221 is a wasteful number, since it uses less digits than its factorization.

1313331020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3123899.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1313331020221 its reverse (1220201333131), we get a palindrome (2533532353352).

The spelling of 1313331020221 in words is "one trillion, three hundred thirteen billion, three hundred thirty-one million, twenty thousand, two hundred twenty-one".