1212112240000 has 480 divisors, whose sum is σ = 3242896628400. Its totient is φ = 451006464000.

The previous prime is 1212112239991. The next prime is 1212112240019. The reversal of 1212112240000 is 422112121.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 2381359746 + ... + 2381360254.

Almost surely, 2^{1212112240000} is an apocalyptic number.

1212112240000 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 1212112240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1621448314200).

1212112240000 is an abundant number, since it is smaller than the sum of its proper divisors (2030784388400).

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

1212112240000 is an equidigital number, since it uses as much as digits as its factorization.

1212112240000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212112240000 its reverse (422112121), we get a palindrome (1212534352121).

The spelling of 1212112240000 in words is "one trillion, two hundred twelve billion, one hundred twelve million, two hundred forty thousand".