12222212322100 has 144 divisors (see below), whose sum is σ = 29200627040256. Its totient is φ = 4403473200000.

The previous prime is 12222212322091. The next prime is 12222212322113. The reversal of 12222212322100 is 122321222221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103738225 + ... + 103855975.

It is an arithmetic number, because the mean of its divisors is an integer number (202782132224).

Almost surely, 2^{12222212322100} is an apocalyptic number.

12222212322100 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 12222212322100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14600313520128).

12222212322100 is an abundant number, since it is smaller than the sum of its proper divisors (16978414718156).

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

12222212322100 is a wasteful number, since it uses less digits than its factorization.

12222212322100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118646 (or 118639 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12222212322100 its reverse (122321222221), we get a palindrome (12344533544321).

The spelling of 12222212322100 in words is "twelve trillion, two hundred twenty-two billion, two hundred twelve million, three hundred twenty-two thousand, one hundred".