12210102 has 80 divisors (see below), whose sum is σ = 29795040. Its totient is φ = 3725568.

The previous prime is 12210101. The next prime is 12210113. The reversal of 12210102 is 20101221.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210101) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 107998 + ... + 108110.

It is an arithmetic number, because the mean of its divisors is an integer number (372438).

Almost surely, 2^12210102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12210102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14897520).

12210102 is an abundant number, since it is smaller than the sum of its proper divisors (17584938).

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

12210102 is a wasteful number, since it uses less digits than its factorization.

12210102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 12210102 is about 3494.2956371778. The cubic root of 12210102 is about 230.2712741221.

Adding to 12210102 its reverse (20101221), we get a palindrome (32311323).

The spelling of 12210102 in words is "twelve million, two hundred ten thousand, one hundred two".