12102100 has 18 divisors (see below), whose sum is σ = 26261774. Its totient is φ = 4840800.

The previous prime is 12102091. The next prime is 12102127. The reversal of 12102100 is 120121.

12102100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 75076 + 12027024 = 274^2 + 3468^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60411 + ... + 60610.

Almost surely, 2^12102100 is an apocalyptic number.

12102100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102100 is an abundant number, since it is smaller than the sum of its proper divisors (14159674).

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

12102100 is a wasteful number, since it uses less digits than its factorization.

12102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121035 (or 121028 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 12102100 is about 3478.8072668660. The cubic root of 12102100 is about 229.5903230148.

Adding to 12102100 its reverse (120121), we get a palindrome (12222221).

The spelling of 12102100 in words is "twelve million, one hundred two thousand, one hundred".