121100089 has 8 divisors (see below), whose sum is σ = 132188832. Its totient is φ = 110024640.

The previous prime is 121100081. The next prime is 121100093. The reversal of 121100089 is 980001121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121100089 - 2³ = 121100081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121100081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34782 + ... + 38104.

It is an arithmetic number, because the mean of its divisors is an integer number (16523604).

Almost surely, 2^121100089 is an apocalyptic number.

It is an amenable number.

121100089 is a deficient number, since it is larger than the sum of its proper divisors (11088743).

121100089 is a wasteful number, since it uses less digits than its factorization.

121100089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6647.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 121100089 is about 11004.5485595730. The cubic root of 121100089 is about 494.7450838594.

The spelling of 121100089 in words is "one hundred twenty-one million, one hundred thousand, eighty-nine".