102110122321 has 4 divisors (see below), whose sum is σ = 102110764644. Its totient is φ = 102109480000.

The previous prime is 102110122253. The next prime is 102110122337. The reversal of 102110122321 is 123221011201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 77234523921 + 24875598400 = 277911^2 + 157720^2 .

It is a cyclic number.

It is not a de Polignac number, because 102110122321 - 2²⁵ = 102076567889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102110122295 and 102110122304.

It is not an unprimeable number, because it can be changed into a prime (102110122381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112341 + ... + 465661.

It is an arithmetic number, because the mean of its divisors is an integer number (25527691161).

Almost surely, 2^102110122321 is an apocalyptic number.

It is an amenable number.

102110122321 is a deficient number, since it is larger than the sum of its proper divisors (642323).

102110122321 is an equidigital number, since it uses as much as digits as its factorization.

102110122321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642322.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 102110122321 its reverse (123221011201), we get a palindrome (225331133522).

The spelling of 102110122321 in words is "one hundred two billion, one hundred ten million, one hundred twenty-two thousand, three hundred twenty-one".