1212334443320 has 384 divisors, whose sum is σ = 3726855861120. Its totient is φ = 345337344000.

The previous prime is 1212334443241. The next prime is 1212334443329. The reversal of 1212334443320 is 233444332121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212334443329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 44470814 + ... + 44498066.

It is an arithmetic number, because the mean of its divisors is an integer number (9705353805).

Almost surely, 2^{1212334443320} is an apocalyptic number.

1212334443320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212334443320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1863427930560).

1212334443320 is an abundant number, since it is smaller than the sum of its proper divisors (2514521417800).

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

1212334443320 is a wasteful number, since it uses less digits than its factorization.

1212334443320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27407 (or 27392 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 1212334443320 its reverse (233444332121), we get a palindrome (1445778775441).

It can be divided in two parts, 12123 and 34443320, that added together give a palindrome (34455443).

The spelling of 1212334443320 in words is "one trillion, two hundred twelve billion, three hundred thirty-four million, four hundred forty-three thousand, three hundred twenty".