12210100100 has 72 divisors (see below), whose sum is σ = 29336226528. Its totient is φ = 4373740800.

The previous prime is 12210100081. The next prime is 12210100109. The reversal of 12210100100 is 100101221.

It is not an unprimeable number, because it can be changed into a prime (12210100109) by changing a digit.

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, 9137 + ... + 156536.

Almost surely, 2^12210100100 is an apocalyptic number.

12210100100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12210100100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14668113264).

12210100100 is an abundant number, since it is smaller than the sum of its proper divisors (17126126428).

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

12210100100 is a wasteful number, since it uses less digits than its factorization.

12210100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165765 (or 165758 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 12210100100 its reverse (100101221), we get a palindrome (12310201321).

The spelling of 12210100100 in words is "twelve billion, two hundred ten million, one hundred thousand, one hundred".