1121712445 has 32 divisors (see below), whose sum is σ = 1631750400. Its totient is φ = 722635776.

The previous prime is 1121712413. The next prime is 1121712509. The reversal of 1121712445 is 5442171211.

It is a cyclic number.

It is not a de Polignac number, because 1121712445 - 2⁵ = 1121712413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 420526 + ... + 423184.

It is an arithmetic number, because the mean of its divisors is an integer number (50992200).

Almost surely, 2^1121712445 is an apocalyptic number.

It is an amenable number.

1121712445 is a deficient number, since it is larger than the sum of its proper divisors (510037955).

1121712445 is a wasteful number, since it uses less digits than its factorization.

1121712445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3397.

The product of its digits is 2240, while the sum is 28.

The square root of 1121712445 is about 33491.9758300402. The cubic root of 1121712445 is about 1039.0278282640.

Adding to 1121712445 its reverse (5442171211), we get a palindrome (6563883656).

The spelling of 1121712445 in words is "one billion, one hundred twenty-one million, seven hundred twelve thousand, four hundred forty-five".