989221321331 has 4 divisors (see below), whose sum is σ = 989609406000. Its totient is φ = 988833236664.

The previous prime is 989221321303. The next prime is 989221321337. The reversal of 989221321331 is 133123122989.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 989221321331 - 2³⁴ = 972041452147 is a prime.

It is a super-2 number, since 2×989221321331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989221321337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194038511 + ... + 194043608.

It is an arithmetic number, because the mean of its divisors is an integer number (247402351500).

Almost surely, 2^989221321331 is an apocalyptic number.

989221321331 is a deficient number, since it is larger than the sum of its proper divisors (388084669).

989221321331 is a wasteful number, since it uses less digits than its factorization.

989221321331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388084668.

The product of its digits is 139968, while the sum is 44.

The spelling of 989221321331 in words is "nine hundred eighty-nine billion, two hundred twenty-one million, three hundred twenty-one thousand, three hundred thirty-one".