121201983 has 12 divisors (see below), whose sum is σ = 200079568. Its totient is φ = 69258240.

The previous prime is 121201981. The next prime is 121202017. The reversal of 121201983 is 389102121.

It is not a de Polignac number, because 121201983 - 2¹ = 121201981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 961858 + ... + 961983.

Almost surely, 2^121201983 is an apocalyptic number.

121201983 is a deficient number, since it is larger than the sum of its proper divisors (78877585).

121201983 is a wasteful number, since it uses less digits than its factorization.

121201983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923854 (or 1923851 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 121201983 is about 11009.1772172129. The cubic root of 121201983 is about 494.8838049888.

The spelling of 121201983 in words is "one hundred twenty-one million, two hundred one thousand, nine hundred eighty-three".