12212100102220 has 24 divisors (see below), whose sum is σ = 25645477791024. Its totient is φ = 4884827169216.

The previous prime is 12212100102199. The next prime is 12212100102221. The reversal of 12212100102220 is 2220100121221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12212100102194 and 12212100102203.

It is not an unprimeable number, because it can be changed into a prime (12212100102221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11766387 + ... + 12762133.

It is an arithmetic number, because the mean of its divisors is an integer number (1068561574626).

Almost surely, 2^{12212100102220} is an apocalyptic number.

12212100102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212100102220 is an abundant number, since it is smaller than the sum of its proper divisors (13433377688804).

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

12212100102220 is a wasteful number, since it uses less digits than its factorization.

12212100102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608969 (or 1608967 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12212100102220 its reverse (2220100121221), we get a palindrome (14432200223441).

The spelling of 12212100102220 in words is "twelve trillion, two hundred twelve billion, one hundred million, one hundred two thousand, two hundred twenty".