121441 has 2 divisors, whose sum is σ = 121442. Its totient is φ = 121440.

The previous prime is 121439. The next prime is 121447. The reversal of 121441 is 144121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112225 + 9216 = 335^2 + 96^2 .

It is a cyclic number.

It is not a de Polignac number, because 121441 - 2¹ = 121439 is a prime.

Together with 121439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (121447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60720 + 60721.

It is an arithmetic number, because the mean of its divisors is an integer number (60721).

2¹²¹⁴⁴¹ is an apocalyptic number.

It is an amenable number.

121441 is a deficient number, since it is larger than the sum of its proper divisors (1).

121441 is an equidigital number, since it uses as much as digits as its factorization.

121441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32, while the sum is 13.

The square root of 121441 is about 348.4838590236. The cubic root of 121441 is about 49.5208904104.

Adding to 121441 its reverse (144121), we get a palindrome (265562).

It can be divided in two parts, 121 and 441, that multiplied together give a square (53361 = 231²).

The spelling of 121441 in words is "one hundred twenty-one thousand, four hundred forty-one", and thus it is an iban number.