12212211122100 has 216 divisors, whose sum is σ = 41860473258240. Its totient is φ = 2953296576000.

The previous prime is 12212211122093. The next prime is 12212211122129. The reversal of 12212211122100 is 122111221221.

12212211122100 is a `hidden beast` number, since 1 + 221 + 221 + 1 + 1 + 221 + 0 + 0 = 666.

12212211122100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12212211122100² (a number of 27 digits) contains 22 as substring.

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 71 ways as a sum of consecutive naturals, for example, 2541085 + ... + 5557115.

Almost surely, 2^{12212211122100} is an apocalyptic number.

12212211122100 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 12212211122100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20930236629120).

12212211122100 is an abundant number, since it is smaller than the sum of its proper divisors (29648262136140).

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

12212211122100 is a wasteful number, since it uses less digits than its factorization.

12212211122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016471 (or 3016461 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12212211122100 its reverse (122111221221), we get a palindrome (12334322343321).

The spelling of 12212211122100 in words is "twelve trillion, two hundred twelve billion, two hundred eleven million, one hundred twenty-two thousand, one hundred".