1121323104 has 288 divisors, whose sum is σ = 3640684320. Its totient is φ = 324403200.

The previous prime is 1121323097. The next prime is 1121323123. The reversal of 1121323104 is 4013231211.

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 polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11559984 + ... + 11560080.

It is an arithmetic number, because the mean of its divisors is an integer number (12641265).

Almost surely, 2^1121323104 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 1121323104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1820342160).

1121323104 is an abundant number, since it is smaller than the sum of its proper divisors (2519361216).

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

1121323104 is a wasteful number, since it uses less digits than its factorization.

1121323104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1121323104 is about 33486.1628736408. The cubic root of 1121323104 is about 1038.9076004972.

Adding to 1121323104 its reverse (4013231211), we get a palindrome (5134554315).

The spelling of 1121323104 in words is "one billion, one hundred twenty-one million, three hundred twenty-three thousand, one hundred four".