12001101221100 has 72 divisors (see below), whose sum is σ = 34734622220368. Its totient is φ = 3199239648000.

The previous prime is 12001101221041. The next prime is 12001101221117. The reversal of 12001101221100 is 112210110021.

It is a super-2 number, since 2×12001101221100² (a number of 27 digits) contains 22 as substring.

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

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, 5674951 + ... + 7497150.

Almost surely, 2^{12001101221100} is an apocalyptic number.

12001101221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001101221100 is an abundant number, since it is smaller than the sum of its proper divisors (22733520999268).

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

12001101221100 is a wasteful number, since it uses less digits than its factorization.

12001101221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13175155 (or 13175148 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12001101221100 its reverse (112210110021), we get a palindrome (12113311331121).

The spelling of 12001101221100 in words is "twelve trillion, one billion, one hundred one million, two hundred twenty-one thousand, one hundred".