12212110221200 has 30 divisors (see below), whose sum is σ = 29339594807394. Its totient is φ = 4884844088320.

The previous prime is 12212110221131. The next prime is 12212110221211. The reversal of 12212110221200 is 212201121221.

It can be written as a sum of positive squares in 3 ways, for example, as 2844302224 + 12209265918976 = 53332^2 + 3494176^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15265137377 + ... + 15265138176.

Almost surely, 2^{12212110221200} is an apocalyptic number.

12212110221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212110221200 is an abundant number, since it is smaller than the sum of its proper divisors (17127484586194).

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

12212110221200 is a wasteful number, since it uses less digits than its factorization.

12212110221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30530275571 (or 30530275560 counting only the distinct ones).

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

Adding to 12212110221200 its reverse (212201121221), we get a palindrome (12424311342421).

The spelling of 12212110221200 in words is "twelve trillion, two hundred twelve billion, one hundred ten million, two hundred twenty-one thousand, two hundred".