1313133210221 has 16 divisors (see below), whose sum is σ = 1598186536704. Its totient is φ = 1053211017984.

The previous prime is 1313133210217. The next prime is 1313133210223. The reversal of 1313133210221 is 1220123313131.

It is a cyclic number.

It is not a de Polignac number, because 1313133210221 - 2² = 1313133210217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313133210223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31871705 + ... + 31912878.

It is an arithmetic number, because the mean of its divisors is an integer number (99886658544).

Almost surely, 2^{1313133210221} is an apocalyptic number.

It is an amenable number.

1313133210221 is a deficient number, since it is larger than the sum of its proper divisors (285053326483).

1313133210221 is a wasteful number, since it uses less digits than its factorization.

1313133210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63784780.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1313133210221 its reverse (1220123313131), we get a palindrome (2533256523352).

The spelling of 1313133210221 in words is "one trillion, three hundred thirteen billion, one hundred thirty-three million, two hundred ten thousand, two hundred twenty-one".