1121054324520 has 128 divisors (see below), whose sum is σ = 3624821020800. Its totient is φ = 275726828544.

The previous prime is 1121054324513. The next prime is 1121054324521. The reversal of 1121054324520 is 254234501211.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1121054324521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1624879 + ... + 2209601.

It is an arithmetic number, because the mean of its divisors is an integer number (28318914225).

Almost surely, 2^{1121054324520} is an apocalyptic number.

1121054324520 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 1121054324520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1812410510400).

1121054324520 is an abundant number, since it is smaller than the sum of its proper divisors (2503766696280).

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

1121054324520 is a wasteful number, since it uses less digits than its factorization.

1121054324520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585979 (or 585975 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 1121054324520 its reverse (254234501211), we get a palindrome (1375288825731).

The spelling of 1121054324520 in words is "one trillion, one hundred twenty-one billion, fifty-four million, three hundred twenty-four thousand, five hundred twenty".