102220312 has 16 divisors (see below), whose sum is σ = 194090400. Its totient is φ = 50462880.

The previous prime is 102220297. The next prime is 102220343. The reversal of 102220312 is 213022201.

It is a junction number, because it is equal to n+sod(n) for n = 102220292 and 102220301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80239 + ... + 81502.

It is an arithmetic number, because the mean of its divisors is an integer number (12130650).

Almost surely, 2^102220312 is an apocalyptic number.

It is an amenable number.

102220312 is a deficient number, since it is larger than the sum of its proper divisors (91870088).

102220312 is a wasteful number, since it uses less digits than its factorization.

102220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161826 (or 161822 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 102220312 is about 10110.4061243849. The cubic root of 102220312 is about 467.5690263830.

Adding to 102220312 its reverse (213022201), we get a palindrome (315242513).

The spelling of 102220312 in words is "one hundred two million, two hundred twenty thousand, three hundred twelve".