1313222012 has 24 divisors (see below), whose sum is σ = 2421459600. Its totient is φ = 621444096.

The previous prime is 1313222003. The next prime is 1313222017. The reversal of 1313222012 is 2102223131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313222017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75164 + ... + 90972.

It is an arithmetic number, because the mean of its divisors is an integer number (100894150).

Almost surely, 2^1313222012 is an apocalyptic number.

It is an amenable number.

1313222012 is a deficient number, since it is larger than the sum of its proper divisors (1108237588).

1313222012 is a wasteful number, since it uses less digits than its factorization.

1313222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16925 (or 16923 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1313222012 is about 36238.4052077351. The cubic root of 1313222012 is about 1095.0805142246.

Adding to 1313222012 its reverse (2102223131), we get a palindrome (3415445143).

The spelling of 1313222012 in words is "one billion, three hundred thirteen million, two hundred twenty-two thousand, twelve".