12101221200 has 60 divisors (see below), whose sum is σ = 38764249088. Its totient is φ = 3226992000.

The previous prime is 12101221199. The next prime is 12101221211. The reversal of 12101221200 is 212210121.

12101221200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5040976 + ... + 5043375.

Almost surely, 2^12101221200 is an apocalyptic number.

12101221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101221200 is an abundant number, since it is smaller than the sum of its proper divisors (26663027888).

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

12101221200 is a wasteful number, since it uses less digits than its factorization.

12101221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10084372 (or 10084361 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12101221200 its reverse (212210121), we get a palindrome (12313431321).

The spelling of 12101221200 in words is "twelve billion, one hundred one million, two hundred twenty-one thousand, two hundred".