12101221201100 has 72 divisors (see below), whose sum is σ = 26329326273600. Its totient is φ = 4827649881600.

The previous prime is 12101221201087. The next prime is 12101221201103. The reversal of 12101221201100 is 110212210121.

It is not an unprimeable number, because it can be changed into a prime (12101221201103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215146781 + ... + 215203019.

Almost surely, 2^{12101221201100} is an apocalyptic number.

12101221201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101221201100 is an abundant number, since it is smaller than the sum of its proper divisors (14228105072500).

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

12101221201100 is a wasteful number, since it uses less digits than its factorization.

12101221201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61923 (or 61916 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12101221201100 its reverse (110212210121), we get a palindrome (12211433411221).

The spelling of 12101221201100 in words is "twelve trillion, one hundred one billion, two hundred twenty-one million, two hundred one thousand, one hundred".