121455112 has 16 divisors (see below), whose sum is σ = 229745340. Its totient is φ = 60189696.

The previous prime is 121455109. The next prime is 121455133. The reversal of 121455112 is 211554121.

It can be written as a sum of positive squares in 2 ways, for example, as 82192356 + 39262756 = 9066^2 + 6266^2 .

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, 66273 + ... + 68080.

Almost surely, 2^121455112 is an apocalyptic number.

It is an amenable number.

121455112 is a deficient number, since it is larger than the sum of its proper divisors (108290228).

121455112 is a wasteful number, since it uses less digits than its factorization.

121455112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134472 (or 134468 counting only the distinct ones).

The product of its digits is 400, while the sum is 22.

The square root of 121455112 is about 11020.6674933962. The cubic root of 121455112 is about 495.2280852079.

Subtracting 121455112 from its reverse (211554121), we obtain a palindrome (90099009).

The spelling of 121455112 in words is "one hundred twenty-one million, four hundred fifty-five thousand, one hundred twelve".