912551121 has 12 divisors (see below), whose sum is σ = 1318415748. Its totient is φ = 608235264.

The previous prime is 912551113. The next prime is 912551147. The reversal of 912551121 is 121155219.

912551121 is a `hidden beast` number, since 9 + 125 + 511 + 21 = 666.

912551121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 347300496 + 565250625 = 18636^2 + 23775^2 .

It is not a de Polignac number, because 912551121 - 2³ = 912551113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (912551111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51241 + ... + 66713.

It is an arithmetic number, because the mean of its divisors is an integer number (109867979).

Almost surely, 2^912551121 is an apocalyptic number.

It is an amenable number.

912551121 is a deficient number, since it is larger than the sum of its proper divisors (405864627).

912551121 is a wasteful number, since it uses less digits than its factorization.

912551121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22032 (or 22029 counting only the distinct ones).

The product of its digits is 900, while the sum is 27.

The square root of 912551121 is about 30208.4610829483. The cubic root of 912551121 is about 969.9568199151.

The spelling of 912551121 in words is "nine hundred twelve million, five hundred fifty-one thousand, one hundred twenty-one".