1213442120000 has 280 divisors, whose sum is σ = 3297213928800. Its totient is φ = 439271680000.

The previous prime is 1213442119973. The next prime is 1213442120017. The reversal of 1213442120000 is 212443121.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 99873926 + ... + 99886074.

Almost surely, 2^{1213442120000} is an apocalyptic number.

1213442120000 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 1213442120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1648606964400).

1213442120000 is an abundant number, since it is smaller than the sum of its proper divisors (2083771808800).

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

1213442120000 is a wasteful number, since it uses less digits than its factorization.

1213442120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12419 (or 12394 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1213442120000 its reverse (212443121), we get a palindrome (1213654563121).

The spelling of 1213442120000 in words is "one trillion, two hundred thirteen billion, four hundred forty-two million, one hundred twenty thousand".