102212110321 has 4 divisors (see below), whose sum is σ = 102305626612. Its totient is φ = 102118594032.

The previous prime is 102212110261. The next prime is 102212110361. The reversal of 102212110321 is 123011212201.

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 87341527296 + 14870583025 = 295536^2 + 121945^2 .

It is a cyclic number.

It is not a de Polignac number, because 102212110321 - 2³⁵ = 67852371953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102212110295 and 102212110304.

It is not an unprimeable number, because it can be changed into a prime (102212110361) 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, 46756506 + ... + 46758691.

It is an arithmetic number, because the mean of its divisors is an integer number (25576406653).

Almost surely, 2^102212110321 is an apocalyptic number.

It is an amenable number.

102212110321 is a deficient number, since it is larger than the sum of its proper divisors (93516291).

102212110321 is an equidigital number, since it uses as much as digits as its factorization.

102212110321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93516290.

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

Adding to 102212110321 its reverse (123011212201), we get a palindrome (225223322522).

The spelling of 102212110321 in words is "one hundred two billion, two hundred twelve million, one hundred ten thousand, three hundred twenty-one".