1121801124 has 24 divisors (see below), whose sum is σ = 2633214528. Its totient is φ = 371693920.

The previous prime is 1121801089. The next prime is 1121801129. The reversal of 1121801124 is 4211081211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121801124.

It is not an unprimeable number, because it can be changed into a prime (1121801129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277887 + ... + 281894.

It is an arithmetic number, because the mean of its divisors is an integer number (109717272).

Almost surely, 2^1121801124 is an apocalyptic number.

It is an amenable number.

1121801124 is an abundant number, since it is smaller than the sum of its proper divisors (1511413404).

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

1121801124 is a wasteful number, since it uses less digits than its factorization.

1121801124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559955 (or 559953 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

The square root of 1121801124 is about 33493.2996881466. The cubic root of 1121801124 is about 1039.0552082820.

Adding to 1121801124 its reverse (4211081211), we get a palindrome (5332882335).

The spelling of 1121801124 in words is "one billion, one hundred twenty-one million, eight hundred one thousand, one hundred twenty-four".