1121143144 has 32 divisors (see below), whose sum is σ = 2307009600. Its totient is φ = 506552320.

The previous prime is 1121143129. The next prime is 1121143147. The reversal of 1121143144 is 4413411211.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1121143147) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23449 + ... + 52840.

It is an arithmetic number, because the mean of its divisors is an integer number (72094050).

Almost surely, 2^1121143144 is an apocalyptic number.

It is an amenable number.

1121143144 is an abundant number, since it is smaller than the sum of its proper divisors (1185866456).

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

1121143144 is a wasteful number, since it uses less digits than its factorization.

1121143144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76473 (or 76469 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

The square root of 1121143144 is about 33483.4756857767. The cubic root of 1121143144 is about 1038.8520197837.

Adding to 1121143144 its reverse (4413411211), we get a palindrome (5534554355).

The spelling of 1121143144 in words is "one billion, one hundred twenty-one million, one hundred forty-three thousand, one hundred forty-four".