122105 has 4 divisors (see below), whose sum is σ = 146532. Its totient is φ = 97680.

The previous prime is 122099. The next prime is 122117. The reversal of 122105 is 501221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12544 + 109561 = 112^2 + 331^2 .

It is not a de Polignac number, because 122105 - 2⁶ = 122041 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12206 + ... + 12215.

It is an arithmetic number, because the mean of its divisors is an integer number (36633).

2¹²²¹⁰⁵ is an apocalyptic number.

It is an amenable number.

122105 is a deficient number, since it is larger than the sum of its proper divisors (24427).

122105 is an equidigital number, since it uses as much as digits as its factorization.

122105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24426.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 122105 is about 349.4352586675. The cubic root of 122105 is about 49.6109811361.

Adding to 122105 its reverse (501221), we get a palindrome (623326).

The spelling of 122105 in words is "one hundred twenty-two thousand, one hundred five".