12100121200 has 60 divisors (see below), whose sum is σ = 29563319880. Its totient is φ = 4758004480.

The previous prime is 12100121197. The next prime is 12100121213. The reversal of 12100121200 is 212100121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232759 + ... + 279958.

It is an arithmetic number, because the mean of its divisors is an integer number (492721998).

Almost surely, 2^12100121200 is an apocalyptic number.

12100121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12100121200 is an abundant number, since it is smaller than the sum of its proper divisors (17463198680).

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

12100121200 is a wasteful number, since it uses less digits than its factorization.

12100121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512794 (or 512783 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12100121200 its reverse (212100121), we get a palindrome (12312221321).

The spelling of 12100121200 in words is "twelve billion, one hundred million, one hundred twenty-one thousand, two hundred".