121065 has 16 divisors (see below), whose sum is σ = 221568. Its totient is φ = 55296.

The previous prime is 121063. The next prime is 121067. The reversal of 121065 is 560121.

It is an interprime number because it is at equal distance from previous prime (121063) and next prime (121067).

It is not a de Polignac number, because 121065 - 2¹ = 121063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 121065.

It is not an unprimeable number, because it can be changed into a prime (121061) 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, 472 + ... + 681.

It is an arithmetic number, because the mean of its divisors is an integer number (13848).

2¹²¹⁰⁶⁵ is an apocalyptic number.

121065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121065 is a deficient number, since it is larger than the sum of its proper divisors (100503).

121065 is a wasteful number, since it uses less digits than its factorization.

121065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 121065 is about 347.9439610052. The cubic root of 121065 is about 49.4697294775.

Adding to 121065 its reverse (560121), we get a palindrome (681186).

It can be divided in two parts, 1210 and 65, that added together give a triangular number (1275 = T₅₀).

The spelling of 121065 in words is "one hundred twenty-one thousand, sixty-five".