12001101221200 has 120 divisors (see below), whose sum is σ = 35486333257088. Its totient is φ = 3798150704640.

The previous prime is 12001101221149. The next prime is 12001101221231. The reversal of 12001101221200 is 212210110021.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 164813892 + ... + 164886691.

Almost surely, 2^{12001101221200} is an apocalyptic number.

12001101221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001101221200 is an abundant number, since it is smaller than the sum of its proper divisors (23485232035888).

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

12001101221200 is a wasteful number, since it uses less digits than its factorization.

12001101221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329700621 (or 329700610 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12001101221200 its reverse (212210110021), we get a palindrome (12213311331221).

The spelling of 12001101221200 in words is "twelve trillion, one billion, one hundred one million, two hundred twenty-one thousand, two hundred".