1122400000000 has 432 divisors, whose sum is σ = 2975271914160. Its totient is φ = 422400000000.

The previous prime is 1122399999979. The next prime is 1122400000103. The reversal of 1122400000000 is 42211.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18399999970 + ... + 18400000030.

It is an arithmetic number, because the mean of its divisors is an integer number (6887203505).

Almost surely, 2^{1122400000000} is an apocalyptic number.

1122400000000 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 1122400000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1487635957080).

1122400000000 is an abundant number, since it is smaller than the sum of its proper divisors (1852871914160).

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

1122400000000 is an frugal number, since it uses more digits than its factorization.

1122400000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 1122400000000 its reverse (42211), we get a palindrome (1122400042211).

The spelling of 1122400000000 in words is "one trillion, one hundred twenty-two billion, four hundred million", and thus it is an aban number.