1313121221332 has 24 divisors (see below), whose sum is σ = 2431186259040. Its totient is φ = 618847397280.

The previous prime is 1313121221317. The next prime is 1313121221359. The reversal of 1313121221332 is 2331221213131.

It is a junction number, because it is equal to n+sod(n) for n = 1313121221297 and 1313121221306.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 43837594 + ... + 43867537.

It is an arithmetic number, because the mean of its divisors is an integer number (101299427460).

Almost surely, 2^{1313121221332} is an apocalyptic number.

It is an amenable number.

1313121221332 is a deficient number, since it is larger than the sum of its proper divisors (1118065037708).

1313121221332 is a wasteful number, since it uses less digits than its factorization.

1313121221332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87705351 (or 87705349 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

Adding to 1313121221332 its reverse (2331221213131), we get a palindrome (3644342434463).

The spelling of 1313121221332 in words is "one trillion, three hundred thirteen billion, one hundred twenty-one million, two hundred twenty-one thousand, three hundred thirty-two".