1212445318 has 32 divisors (see below), whose sum is σ = 2128089600. Its totient is φ = 517857480.

The previous prime is 1212445307. The next prime is 1212445337. The reversal of 1212445318 is 8135442121.

It is a super-2 number, since 2×1212445318² = 2940047298280242248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1212445318.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210505 + ... + 216187.

It is an arithmetic number, because the mean of its divisors is an integer number (66502800).

Almost surely, 2^1212445318 is an apocalyptic number.

1212445318 is a deficient number, since it is larger than the sum of its proper divisors (915644282).

1212445318 is an equidigital number, since it uses as much as digits as its factorization.

1212445318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6017 (or 6003 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 1212445318 is about 34820.1854963468. The cubic root of 1212445318 is about 1066.3195874462.

Adding to 1212445318 its reverse (8135442121), we get a palindrome (9347887439).

The spelling of 1212445318 in words is "one billion, two hundred twelve million, four hundred forty-five thousand, three hundred eighteen".