1212231330000 has 300 divisors, whose sum is σ = 4423675095840. Its totient is φ = 309206304000.

The previous prime is 1212231329989. The next prime is 1212231330017. The reversal of 1212231330000 is 331322121.

It is a tau number, because it is divible by the number of its divisors (300).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1777191 + ... + 2362809.

Almost surely, 2^{1212231330000} is an apocalyptic number.

1212231330000 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 1212231330000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2211837547920).

1212231330000 is an abundant number, since it is smaller than the sum of its proper divisors (3211443765840).

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

1212231330000 is a wasteful number, since it uses less digits than its factorization.

1212231330000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585676 (or 585652 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1212231330000 its reverse (331322121), we get a palindrome (1212562652121).

The spelling of 1212231330000 in words is "one trillion, two hundred twelve billion, two hundred thirty-one million, three hundred thirty thousand".