1213313221012 has 12 divisors (see below), whose sum is σ = 2123308825876. Its totient is φ = 606653556480.

The previous prime is 1213313220953. The next prime is 1213313221027. The reversal of 1213313221012 is 2101223133121.

It can be written as a sum of positive squares in 2 ways, for example, as 466672061956 + 746641159056 = 683134^2 + 864084^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292738 + ... + 1585030.

Almost surely, 2^{1213313221012} is an apocalyptic number.

It is an amenable number.

1213313221012 is a deficient number, since it is larger than the sum of its proper divisors (909995604864).

1213313221012 is a wasteful number, since it uses less digits than its factorization.

1213313221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527018 (or 1527016 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1213313221012 its reverse (2101223133121), we get a palindrome (3314536354133).

The spelling of 1213313221012 in words is "one trillion, two hundred thirteen billion, three hundred thirteen million, two hundred twenty-one thousand, twelve".