12123202100 has 18 divisors (see below), whose sum is σ = 26307348774. Its totient is φ = 4849280800.

The previous prime is 12123202093. The next prime is 12123202127. The reversal of 12123202100 is 120232121.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1148125456 + 10975076644 = 33884^2 + 104762^2 .

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, 60615911 + ... + 60616110.

Almost surely, 2^12123202100 is an apocalyptic number.

12123202100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123202100 is an abundant number, since it is smaller than the sum of its proper divisors (14184146674).

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

12123202100 is a wasteful number, since it uses less digits than its factorization.

12123202100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121232035 (or 121232028 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12123202100 its reverse (120232121), we get a palindrome (12243434221).

The spelling of 12123202100 in words is "twelve billion, one hundred twenty-three million, two hundred two thousand, one hundred".