121169 has 2 divisors, whose sum is σ = 121170. Its totient is φ = 121168.

The previous prime is 121157. The next prime is 121171. The reversal of 121169 is 961121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102400 + 18769 = 320^2 + 137^2 .

It is a cyclic number.

It is not a de Polignac number, because 121169 - 2¹⁶ = 55633 is a prime.

It is a super-2 number, since 2×121169² = 29363853122, which contains 22 as substring.

Together with 121171, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121169.

It is not a weakly prime, because it can be changed into another prime (121139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60584 + 60585.

It is an arithmetic number, because the mean of its divisors is an integer number (60585).

2¹²¹¹⁶⁹ is an apocalyptic number.

It is an amenable number.

121169 is a deficient number, since it is larger than the sum of its proper divisors (1).

121169 is an equidigital number, since it uses as much as digits as its factorization.

121169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 20.

The square root of 121169 is about 348.0933782766. The cubic root of 121169 is about 49.4838909592.

It can be divided in two parts, 121 and 169, that multiplied together give a square (20449 = 143²).

The spelling of 121169 in words is "one hundred twenty-one thousand, one hundred sixty-nine".