121085 has 8 divisors (see below), whose sum is σ = 148056. Its totient is φ = 95040.

The previous prime is 121081. The next prime is 121123. The reversal of 121085 is 580121.

121085 = T₃₀ + T₃₁ + ... + T₉₀.

121085 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 4 ways, for example, as 1369 + 119716 = 37^2 + 346^2 .

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

It is not a de Polignac number, because 121085 - 2² = 121081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 121085.

It is not an unprimeable number, because it can be changed into a prime (121081) 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, 107 + ... + 503.

It is an arithmetic number, because the mean of its divisors is an integer number (18507).

2¹²¹⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

121085 is a deficient number, since it is larger than the sum of its proper divisors (26971).

121085 is an equidigital number, since it uses as much as digits as its factorization.

121085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 121085 is about 347.9727000786. The cubic root of 121085 is about 49.4724534690.

The spelling of 121085 in words is "one hundred twenty-one thousand, eighty-five".