121149 has 16 divisors (see below), whose sum is σ = 205440. Its totient is φ = 69120.

The previous prime is 121139. The next prime is 121151. The reversal of 121149 is 941121.

It is not a de Polignac number, because 121149 - 2⁷ = 121021 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 121149.

It is not an unprimeable number, because it can be changed into a prime (121139) 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 in 15 ways as a sum of consecutive naturals, for example, 132 + ... + 509.

It is an arithmetic number, because the mean of its divisors is an integer number (12840).

2¹²¹¹⁴⁹ is an apocalyptic number.

It is an amenable number.

121149 is a deficient number, since it is larger than the sum of its proper divisors (84291).

121149 is an equidigital number, since it uses as much as digits as its factorization.

121149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 651 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 121149 is about 348.0646491674. The cubic root of 121149 is about 49.4811682268.

The spelling of 121149 in words is "one hundred twenty-one thousand, one hundred forty-nine".