1121310444 has 48 divisors (see below), whose sum is σ = 2732954112. Its totient is φ = 357151872.

The previous prime is 1121310409. The next prime is 1121310451. The reversal of 1121310444 is 4440131211.

It is a super-2 number, since 2×1121310444² = 2514674223646954272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1121310444.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424552 + ... + 427184.

It is an arithmetic number, because the mean of its divisors is an integer number (56936544).

Almost surely, 2^1121310444 is an apocalyptic number.

It is an amenable number.

1121310444 is an abundant number, since it is smaller than the sum of its proper divisors (1611643668).

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

1121310444 is a wasteful number, since it uses less digits than its factorization.

1121310444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4206 (or 4204 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1121310444 is about 33485.9738398034. The cubic root of 1121310444 is about 1038.9036906459.

Adding to 1121310444 its reverse (4440131211), we get a palindrome (5561441655).

The spelling of 1121310444 in words is "one billion, one hundred twenty-one million, three hundred ten thousand, four hundred forty-four".