1212445344 has 96 divisors (see below), whose sum is σ = 3479523264. Its totient is φ = 366612480.

The previous prime is 1212445337. The next prime is 1212445357. The reversal of 1212445344 is 4435442121.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646392 + ... + 648264.

It is an arithmetic number, because the mean of its divisors is an integer number (36245034).

Almost surely, 2^1212445344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212445344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1739761632).

1212445344 is an abundant number, since it is smaller than the sum of its proper divisors (2267077920).

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

1212445344 is a wasteful number, since it uses less digits than its factorization.

1212445344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510 (or 2502 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 1212445344 is about 34820.1858696935. The cubic root of 1212445344 is about 1066.3195950683.

Adding to 1212445344 its reverse (4435442121), we get a palindrome (5647887465).

The spelling of 1212445344 in words is "one billion, two hundred twelve million, four hundred forty-five thousand, three hundred forty-four".