1313221112 has 32 divisors (see below), whose sum is σ = 2853688320. Its totient is φ = 554880480.

The previous prime is 1313221093. The next prime is 1313221127. The reversal of 1313221112 is 2111223131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161168 + ... + 169119.

It is an arithmetic number, because the mean of its divisors is an integer number (89177760).

Almost surely, 2^1313221112 is an apocalyptic number.

It is an amenable number.

1313221112 is an abundant number, since it is smaller than the sum of its proper divisors (1540467208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1313221112 is a wasteful number, since it uses less digits than its factorization.

1313221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330371 (or 330367 counting only the distinct ones).

The product of its digits is 72, while the sum is 17.

The square root of 1313221112 is about 36238.3927899679. The cubic root of 1313221112 is about 1095.0802640580.

Adding to 1313221112 its reverse (2111223131), we get a palindrome (3424444243).

The spelling of 1313221112 in words is "one billion, three hundred thirteen million, two hundred twenty-one thousand, one hundred twelve".