12212221012100 has 36 divisors (see below), whose sum is σ = 26502223582464. Its totient is φ = 4884574306080.

The previous prime is 12212221012039. The next prime is 12212221012171. The reversal of 12212221012100 is 121012221221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2360144 + ... + 5476743.

Almost surely, 2^{12212221012100} is an apocalyptic number.

12212221012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212221012100 is an abundant number, since it is smaller than the sum of its proper divisors (14290002570364).

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

12212221012100 is a wasteful number, since it uses less digits than its factorization.

12212221012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7852484 (or 7852477 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12212221012100 its reverse (121012221221), we get a palindrome (12333233233321).

It can be divided in two parts, 1221222 and 1012100, that added together give a palindrome (2233322).

The spelling of 12212221012100 in words is "twelve trillion, two hundred twelve billion, two hundred twenty-one million, twelve thousand, one hundred".