121055 has 16 divisors (see below), whose sum is σ = 165888. Its totient is φ = 84000.

The previous prime is 121039. The next prime is 121061. The reversal of 121055 is 550121.

It is not a de Polignac number, because 121055 - 2⁴ = 121039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1670 + ... + 1740.

It is an arithmetic number, because the mean of its divisors is an integer number (10368).

2¹²¹⁰⁵⁵ is an apocalyptic number.

121055 is a deficient number, since it is larger than the sum of its proper divisors (44833).

121055 is a wasteful number, since it uses less digits than its factorization.

121055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 121055 is about 347.9295905783. The cubic root of 121055 is about 49.4683673692.

Adding to 121055 its reverse (550121), we get a palindrome (671176).

The spelling of 121055 in words is "one hundred twenty-one thousand, fifty-five".