1121244407 has 4 divisors (see below), whose sum is σ = 1123834320. Its totient is φ = 1118654496.

The previous prime is 1121244403. The next prime is 1121244413. The reversal of 1121244407 is 7044421211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121244407 - 2² = 1121244403 is a prime.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1294307 + ... + 1295172.

It is an arithmetic number, because the mean of its divisors is an integer number (280958580).

Almost surely, 2^1121244407 is an apocalyptic number.

1121244407 is a deficient number, since it is larger than the sum of its proper divisors (2589913).

1121244407 is an equidigital number, since it uses as much as digits as its factorization.

1121244407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2589912.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 1121244407 is about 33484.9877855734. The cubic root of 1121244407 is about 1038.8832956309.

Adding to 1121244407 its reverse (7044421211), we get a palindrome (8165665618).

The spelling of 1121244407 in words is "one billion, one hundred twenty-one million, two hundred forty-four thousand, four hundred seven".