121112456 has 16 divisors (see below), whose sum is σ = 228401100. Its totient is φ = 60205504.

The previous prime is 121112449. The next prime is 121112461. The reversal of 121112456 is 654211121.

It can be written as a sum of positive squares in 2 ways, for example, as 87123556 + 33988900 = 9334^2 + 5830^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42371 + ... + 45138.

Almost surely, 2^121112456 is an apocalyptic number.

It is an amenable number.

121112456 is a deficient number, since it is larger than the sum of its proper divisors (107288644).

121112456 is a wasteful number, since it uses less digits than its factorization.

121112456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87688 (or 87684 counting only the distinct ones).

The product of its digits is 480, while the sum is 23.

The square root of 121112456 is about 11005.1104492413. The cubic root of 121112456 is about 494.7619247614.

Adding to 121112456 its reverse (654211121), we get a palindrome (775323577).

The spelling of 121112456 in words is "one hundred twenty-one million, one hundred twelve thousand, four hundred fifty-six".