983121121389 has 16 divisors (see below), whose sum is σ = 1444152723264. Its totient is φ = 589931664000.

The previous prime is 983121121357. The next prime is 983121121393.

It is a happy number.

983121121389 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 983121121389 - 2⁵ = 983121121357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (983121121189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147479584 + ... + 147486249.

It is an arithmetic number, because the mean of its divisors is an integer number (90259545204).

Almost surely, 2^983121121389 is an apocalyptic number.

It is an amenable number.

983121121389 is a deficient number, since it is larger than the sum of its proper divisors (461031601875).

983121121389 is a wasteful number, since it uses less digits than its factorization.

983121121389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294965948.

The product of its digits is 186624, while the sum is 48.

The spelling of 983121121389 in words is "nine hundred eighty-three billion, one hundred twenty-one million, one hundred twenty-one thousand, three hundred eighty-nine".