989011212121 has 8 divisors (see below), whose sum is σ = 1013262449760. Its totient is φ = 964816837152.

The previous prime is 989011212029. The next prime is 989011212149. The reversal of 989011212121 is 121212110989.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 989011212121 - 2¹¹ = 989011210073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989011216121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14180455 + ... + 14250028.

It is an arithmetic number, because the mean of its divisors is an integer number (126657806220).

Almost surely, 2^989011212121 is an apocalyptic number.

It is an amenable number.

989011212121 is a deficient number, since it is larger than the sum of its proper divisors (24251237639).

989011212121 is a wasteful number, since it uses less digits than its factorization.

989011212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28431335.

The product of its (nonzero) digits is 5184, while the sum is 37.

The spelling of 989011212121 in words is "nine hundred eighty-nine billion, eleven million, two hundred twelve thousand, one hundred twenty-one".