989123210101 has 16 divisors (see below), whose sum is σ = 1090223576064. Its totient is φ = 891680194944.

The previous prime is 989123210021. The next prime is 989123210111. The reversal of 989123210101 is 101012321989.

It is a cyclic number.

It is not a de Polignac number, because 989123210101 - 2⁹ = 989123209589 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 (989123210111) 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, 1465336 + ... + 2031121.

It is an arithmetic number, because the mean of its divisors is an integer number (68138973504).

Almost surely, 2^989123210101 is an apocalyptic number.

It is an amenable number.

989123210101 is a deficient number, since it is larger than the sum of its proper divisors (101100365963).

989123210101 is a wasteful number, since it uses less digits than its factorization.

989123210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3496980.

The product of its (nonzero) digits is 7776, while the sum is 37.

The spelling of 989123210101 in words is "nine hundred eighty-nine billion, one hundred twenty-three million, two hundred ten thousand, one hundred one".