12222221102100 has 108 divisors (see below), whose sum is σ = 38313438705724. Its totient is φ = 3258955607040.

The previous prime is 12222221102081. The next prime is 12222221102111. The reversal of 12222221102100 is 120112222221.

It is a happy number.

12222221102100 is a `hidden beast` number, since 1 + 2 + 222 + 221 + 10 + 210 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1647146361744 + 10575074740356 = 1283412^2 + 3251934^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9126732 + ... + 10379868.

Almost surely, 2^{12222221102100} is an apocalyptic number.

12222221102100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222221102100 is an abundant number, since it is smaller than the sum of its proper divisors (26091217603624).

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

12222221102100 is a wasteful number, since it uses less digits than its factorization.

12222221102100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263994 (or 1263984 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12222221102100 its reverse (120112222221), we get a palindrome (12342333324321).

The spelling of 12222221102100 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred two thousand, one hundred".