102212208 has 120 divisors (see below), whose sum is σ = 337565696. Its totient is φ = 28252800.

The previous prime is 102212141. The next prime is 102212213. The reversal of 102212208 is 802212201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29613 + ... + 32883.

Almost surely, 2^102212208 is an apocalyptic number.

102212208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102212208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168782848).

102212208 is an abundant number, since it is smaller than the sum of its proper divisors (235353488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102212208 is a wasteful number, since it uses less digits than its factorization.

102212208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323 (or 3314 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 102212208 is about 10110.0053412449. The cubic root of 102212208 is about 467.5566698058.

Adding to 102212208 its reverse (802212201), we get a palindrome (904424409).

The spelling of 102212208 in words is "one hundred two million, two hundred twelve thousand, two hundred eight".