1213051440000 has 320 divisors, whose sum is σ = 4165286994000. Its totient is φ = 312324096000.

The previous prime is 1213051439993. The next prime is 1213051440059. The reversal of 1213051440000 is 441503121.

It is a tau number, because it is divible by the number of its divisors (320).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6872856 + ... + 7047144.

Almost surely, 2^{1213051440000} is an apocalyptic number.

1213051440000 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 1213051440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2082643497000).

1213051440000 is an abundant number, since it is smaller than the sum of its proper divisors (2952235554000).

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

1213051440000 is an equidigital number, since it uses as much as digits as its factorization.

1213051440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174355 (or 174328 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 1213051440000 its reverse (441503121), we get a palindrome (1213492943121).

The spelling of 1213051440000 in words is "one trillion, two hundred thirteen billion, fifty-one million, four hundred forty thousand".