1121094481892 has 144 divisors (see below), whose sum is σ = 2509549378560. Its totient is φ = 428834915520.

The previous prime is 1121094481849. The next prime is 1121094482023. The reversal of 1121094481892 is 2981844901211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121094481892.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 177301043 + ... + 177307365.

It is an arithmetic number, because the mean of its divisors is an integer number (17427426240).

Almost surely, 2^{1121094481892} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121094481892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1254774689280).

1121094481892 is an abundant number, since it is smaller than the sum of its proper divisors (1388454896668).

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

1121094481892 is a wasteful number, since it uses less digits than its factorization.

1121094481892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7302 (or 7289 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 50.

The spelling of 1121094481892 in words is "one trillion, one hundred twenty-one billion, ninety-four million, four hundred eighty-one thousand, eight hundred ninety-two".