121081 has 2 divisors, whose sum is σ = 121082. Its totient is φ = 121080.

The previous prime is 121067. The next prime is 121123. The reversal of 121081 is 180121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95481 + 25600 = 309^2 + 160^2 .

It is a cyclic number.

It is not a de Polignac number, because 121081 - 2⁹ = 120569 is a prime.

It is a super-2 number, since 2×121081² = 29321217122, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (121001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60540 + 60541.

It is an arithmetic number, because the mean of its divisors is an integer number (60541).

2¹²¹⁰⁸¹ is an apocalyptic number.

It is an amenable number.

121081 is a deficient number, since it is larger than the sum of its proper divisors (1).

121081 is an equidigital number, since it uses as much as digits as its factorization.

121081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 121081 is about 347.9669524538. The cubic root of 121081 is about 49.4719086947.

The spelling of 121081 in words is "one hundred twenty-one thousand, eighty-one".