1121121089 has 16 divisors (see below), whose sum is σ = 1240021440. Its totient is φ = 1005096960.

The previous prime is 1121121019. The next prime is 1121121103. The reversal of 1121121089 is 9801211211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121121089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1121121019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 920609 + ... + 921825.

It is an arithmetic number, because the mean of its divisors is an integer number (77501340).

Almost surely, 2^1121121089 is an apocalyptic number.

It is an amenable number.

1121121089 is a deficient number, since it is larger than the sum of its proper divisors (118900351).

1121121089 is a wasteful number, since it uses less digits than its factorization.

1121121089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320.

The product of its (nonzero) digits is 288, while the sum is 26.

The square root of 1121121089 is about 33483.1463426005. The cubic root of 1121121089 is about 1038.8452076796.

The spelling of 1121121089 in words is "one billion, one hundred twenty-one million, one hundred twenty-one thousand, eighty-nine".