121683141 has 20 divisors (see below), whose sum is σ = 185646912. Its totient is φ = 79393608.

The previous prime is 121683103. The next prime is 121683143. The reversal of 121683141 is 141386121.

It is a happy number.

It is not a de Polignac number, because 121683141 - 2⁷ = 121683013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121683143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12175 + ... + 19788.

Almost surely, 2^121683141 is an apocalyptic number.

It is an amenable number.

121683141 is a deficient number, since it is larger than the sum of its proper divisors (63963771).

121683141 is an equidigital number, since it uses as much as digits as its factorization.

121683141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32022 (or 32013 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 121683141 is about 11031.0081588221. The cubic root of 121683141 is about 495.5378176532.

The spelling of 121683141 in words is "one hundred twenty-one million, six hundred eighty-three thousand, one hundred forty-one".