1121024447 has 4 divisors (see below), whose sum is σ = 1121263416. Its totient is φ = 1120785480.

The previous prime is 1121024423. The next prime is 1121024473. The reversal of 1121024447 is 7444201211.

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 1121024447 - 2¹⁶ = 1120958911 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 (1121024417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112304 + ... + 121877.

It is an arithmetic number, because the mean of its divisors is an integer number (280315854).

Almost surely, 2^1121024447 is an apocalyptic number.

1121024447 is a deficient number, since it is larger than the sum of its proper divisors (238969).

1121024447 is an equidigital number, since it uses as much as digits as its factorization.

1121024447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238968.

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

The square root of 1121024447 is about 33481.7031675511. The cubic root of 1121024447 is about 1038.8153569155.

Adding to 1121024447 its reverse (7444201211), we get a palindrome (8565225658).

The spelling of 1121024447 in words is "one billion, one hundred twenty-one million, twenty-four thousand, four hundred forty-seven".