121355 has 8 divisors (see below), whose sum is σ = 156912. Its totient is φ = 89568.

The previous prime is 121351. The next prime is 121357. The reversal of 121355 is 553121.

121355 is nontrivially palindromic in base 14.

121355 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.

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

It is a cyclic number.

It is not a de Polignac number, because 121355 - 2² = 121351 is a prime.

It is a Duffinian number.

121355 is an undulating number in base 14.

It is a plaindrome in base 6.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (121351) 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, 869 + ... + 998.

It is an arithmetic number, because the mean of its divisors is an integer number (19614).

2¹²¹³⁵⁵ is an apocalyptic number.

121355 is a deficient number, since it is larger than the sum of its proper divisors (35557).

121355 is a wasteful number, since it uses less digits than its factorization.

121355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885.

The product of its digits is 150, while the sum is 17.

The square root of 121355 is about 348.3604455158. The cubic root of 121355 is about 49.5091980322.

Adding to 121355 its reverse (553121), we get a palindrome (674476).

The spelling of 121355 in words is "one hundred twenty-one thousand, three hundred fifty-five".