1122445665 has 48 divisors (see below), whose sum is σ = 2136640896. Its totient is φ = 540576000.

The previous prime is 1122445633. The next prime is 1122445679. The reversal of 1122445665 is 5665442211.

It is not a de Polignac number, because 1122445665 - 2⁵ = 1122445633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67237 + ... + 82253.

It is an arithmetic number, because the mean of its divisors is an integer number (44513352).

Almost surely, 2^1122445665 is an apocalyptic number.

1122445665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1122445665 is a deficient number, since it is larger than the sum of its proper divisors (1014195231).

1122445665 is a wasteful number, since it uses less digits than its factorization.

1122445665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15190 (or 15187 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 1122445665 is about 33502.9202458532. The cubic root of 1122445665 is about 1039.2541697100.

Adding to 1122445665 its reverse (5665442211), we get a palindrome (6787887876).

The spelling of 1122445665 in words is "one billion, one hundred twenty-two million, four hundred forty-five thousand, six hundred sixty-five".