101201309989 has 4 divisors (see below), whose sum is σ = 108986026156. Its totient is φ = 93416593824.

The previous prime is 101201309981. The next prime is 101201310071. The reversal of 101201309989 is 989903102101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38091328900 + 63109981089 = 195170^2 + 251217^2 .

It is a cyclic number.

It is not a de Polignac number, because 101201309989 - 2³ = 101201309981 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 (101201309981) 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, 3892358064 + ... + 3892358089.

It is an arithmetic number, because the mean of its divisors is an integer number (27246506539).

Almost surely, 2^101201309989 is an apocalyptic number.

It is an amenable number.

101201309989 is a deficient number, since it is larger than the sum of its proper divisors (7784716167).

101201309989 is an equidigital number, since it uses as much as digits as its factorization.

101201309989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7784716166.

The product of its (nonzero) digits is 34992, while the sum is 43.

The spelling of 101201309989 in words is "one hundred one billion, two hundred one million, three hundred nine thousand, nine hundred eighty-nine".