1121200403040 has 288 divisors, whose sum is σ = 3863400952320. Its totient is φ = 296084947968.

The previous prime is 1121200403033. The next prime is 1121200403159. The reversal of 1121200403040 is 403040021211.

1121200403040 is a `hidden beast` number, since 1 + 1 + 21 + 200 + 403 + 0 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

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 (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66417321 + ... + 66434199.

It is an arithmetic number, because the mean of its divisors is an integer number (13414586640).

Almost surely, 2^{1121200403040} is an apocalyptic number.

1121200403040 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 1121200403040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1931700476160).

1121200403040 is an abundant number, since it is smaller than the sum of its proper divisors (2742200549280).

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

1121200403040 is a wasteful number, since it uses less digits than its factorization.

1121200403040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17346 (or 17335 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1121200403040 its reverse (403040021211), we get a palindrome (1524240424251).

The spelling of 1121200403040 in words is "one trillion, one hundred twenty-one billion, two hundred million, four hundred three thousand, forty".