989001021101 has 16 divisors (see below), whose sum is σ = 1059911443584. Its totient is φ = 919573876224.

The previous prime is 989001021049. The next prime is 989001021139. The reversal of 989001021101 is 101120100989.

It is a cyclic number.

It is not a de Polignac number, because 989001021101 - 2⁶ = 989001021037 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 (989001021401) 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, 605840 + ... + 1531353.

It is an arithmetic number, because the mean of its divisors is an integer number (66244465224).

Almost surely, 2^989001021101 is an apocalyptic number.

It is an amenable number.

989001021101 is a deficient number, since it is larger than the sum of its proper divisors (70910422483).

989001021101 is a wasteful number, since it uses less digits than its factorization.

989001021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137540.

The product of its (nonzero) digits is 1296, while the sum is 32.

The spelling of 989001021101 in words is "nine hundred eighty-nine billion, one million, twenty-one thousand, one hundred one".