1120889021 has 32 divisors (see below), whose sum is σ = 1388620800. Its totient is φ = 883474560.

The previous prime is 1120889009. The next prime is 1120889027. The reversal of 1120889021 is 1209880211.

It is a cyclic number.

It is not a de Polignac number, because 1120889021 - 2⁶ = 1120888957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120889027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 650441 + ... + 652161.

It is an arithmetic number, because the mean of its divisors is an integer number (43394400).

Almost surely, 2^1120889021 is an apocalyptic number.

It is an amenable number.

1120889021 is a deficient number, since it is larger than the sum of its proper divisors (267731779).

1120889021 is a wasteful number, since it uses less digits than its factorization.

1120889021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 1120889021 is about 33479.6807183103. The cubic root of 1120889021 is about 1038.7735236696.

The spelling of 1120889021 in words is "one billion, one hundred twenty million, eight hundred eighty-nine thousand, twenty-one".