12211201100100 has 72 divisors (see below), whose sum is σ = 35432310659200. Its totient is φ = 3246989834880.

The previous prime is 12211201100099. The next prime is 12211201100129. The reversal of 12211201100100 is 100110211221.

It is a super-2 number, since 2×12211201100100² (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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58210492 + ... + 58419891.

Almost surely, 2^{12211201100100} is an apocalyptic number.

12211201100100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211201100100 is an abundant number, since it is smaller than the sum of its proper divisors (23221109559100).

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

12211201100100 is a wasteful number, since it uses less digits than its factorization.

12211201100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116630749 (or 116630742 counting only the distinct ones).

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

Adding to 12211201100100 its reverse (100110211221), we get a palindrome (12311311311321).

The spelling of 12211201100100 in words is "twelve trillion, two hundred eleven billion, two hundred one million, one hundred thousand, one hundred".