1121444125 has 32 divisors (see below), whose sum is σ = 1491235200. Its totient is φ = 839548800.

The previous prime is 1121444099. The next prime is 1121444131. The reversal of 1121444125 is 5214441211.

It is not a de Polignac number, because 1121444125 - 2²¹ = 1119346973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1121444125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194281 + ... + 199969.

It is an arithmetic number, because the mean of its divisors is an integer number (46601100).

Almost surely, 2^1121444125 is an apocalyptic number.

It is an amenable number.

1121444125 is a deficient number, since it is larger than the sum of its proper divisors (369791075).

1121444125 is an equidigital number, since it uses as much as digits as its factorization.

1121444125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5806 (or 5796 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 1121444125 is about 33487.9698548598. The cubic root of 1121444125 is about 1038.9449745342.

Adding to 1121444125 its reverse (5214441211), we get a palindrome (6335885336).

The spelling of 1121444125 in words is "one billion, one hundred twenty-one million, four hundred forty-four thousand, one hundred twenty-five".