101001089 has 4 divisors (see below), whose sum is σ = 115429824. Its totient is φ = 86572356.

The previous prime is 101001071. The next prime is 101001091. The reversal of 101001089 is 980100101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101001089 - 2⁸ = 101000833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101001089.

It is not an unprimeable number, because it can be changed into a prime (101001059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7214357 + ... + 7214370.

It is an arithmetic number, because the mean of its divisors is an integer number (28857456).

Almost surely, 2^101001089 is an apocalyptic number.

It is an amenable number.

101001089 is a deficient number, since it is larger than the sum of its proper divisors (14428735).

101001089 is an equidigital number, since it uses as much as digits as its factorization.

101001089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14428734.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 101001089 is about 10049.9298007499. The cubic root of 101001089 is about 465.7026245313.

The spelling of 101001089 in words is "one hundred one million, one thousand, eighty-nine".