121101089 has 2 divisors, whose sum is σ = 121101090. Its totient is φ = 121101088.

The previous prime is 121101073. The next prime is 121101107. The reversal of 121101089 is 980101121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105165025 + 15936064 = 10255^2 + 3992^2 .

It is a cyclic number.

It is not a de Polignac number, because 121101089 - 2⁴ = 121101073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121101059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550544 + 60550545.

It is an arithmetic number, because the mean of its divisors is an integer number (60550545).

Almost surely, 2^121101089 is an apocalyptic number.

It is an amenable number.

121101089 is a deficient number, since it is larger than the sum of its proper divisors (1).

121101089 is an equidigital number, since it uses as much as digits as its factorization.

121101089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 121101089 is about 11004.5939952367. The cubic root of 121101089 is about 494.7464456633.

The spelling of 121101089 in words is "one hundred twenty-one million, one hundred one thousand, eighty-nine".