1121244405 has 8 divisors (see below), whose sum is σ = 1793991072. Its totient is φ = 597997008.

The previous prime is 1121244403. The next prime is 1121244413. The reversal of 1121244405 is 5044421211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121244405 - 2¹ = 1121244403 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121244403) 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, 37374799 + ... + 37374828.

It is an arithmetic number, because the mean of its divisors is an integer number (224248884).

Almost surely, 2^1121244405 is an apocalyptic number.

1121244405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121244405 is a deficient number, since it is larger than the sum of its proper divisors (672746667).

1121244405 is an equidigital number, since it uses as much as digits as its factorization.

1121244405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74749635.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1121244405 is about 33484.9877557093. The cubic root of 1121244405 is about 1038.8832950132.

Adding to 1121244405 its reverse (5044421211), we get a palindrome (6165665616).

The spelling of 1121244405 in words is "one billion, one hundred twenty-one million, two hundred forty-four thousand, four hundred five".