102106108721 has 8 divisors (see below), whose sum is σ = 102579697920. Its totient is φ = 101632660272.

The previous prime is 102106108703. The next prime is 102106108771. The reversal of 102106108721 is 127801601201.

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

It is a cyclic number.

It is not a de Polignac number, because 102106108721 - 2³⁴ = 84926239537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102106108771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1592675 + ... + 1655543.

It is an arithmetic number, because the mean of its divisors is an integer number (12822462240).

Almost surely, 2^102106108721 is an apocalyptic number.

It is an amenable number.

102106108721 is a deficient number, since it is larger than the sum of its proper divisors (473589199).

102106108721 is an equidigital number, since it uses as much as digits as its factorization.

102106108721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70375.

The product of its (nonzero) digits is 1344, while the sum is 29.

Adding to 102106108721 its reverse (127801601201), we get a palindrome (229907709922).

The spelling of 102106108721 in words is "one hundred two billion, one hundred six million, one hundred eight thousand, seven hundred twenty-one".