102212305 has 16 divisors (see below), whose sum is σ = 139043520. Its totient is φ = 71506368.

The previous prime is 102212293. The next prime is 102212311. The reversal of 102212305 is 503212201.

It is a cyclic number.

It is not a de Polignac number, because 102212305 - 2¹⁹ = 101688017 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40147 + ... + 42616.

It is an arithmetic number, because the mean of its divisors is an integer number (8690220).

Almost surely, 2^102212305 is an apocalyptic number.

It is an amenable number.

102212305 is a deficient number, since it is larger than the sum of its proper divisors (36831215).

102212305 is a wasteful number, since it uses less digits than its factorization.

102212305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82800.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 102212305 is about 10110.0101384717. The cubic root of 102212305 is about 467.5568177105.

Adding to 102212305 its reverse (503212201), we get a palindrome (605424506).

The spelling of 102212305 in words is "one hundred two million, two hundred twelve thousand, three hundred five".