12221012222200 has 48 divisors (see below), whose sum is σ = 28414083313080. Its totient is φ = 4888365336960.

The previous prime is 12221012222173. The next prime is 12221012222219. The reversal of 12221012222200 is 222221012221.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 48982167 + ... + 49231033.

Almost surely, 2^{12221012222200} is an apocalyptic number.

12221012222200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221012222200 is an abundant number, since it is smaller than the sum of its proper divisors (16193071090880).

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

12221012222200 is a wasteful number, since it uses less digits than its factorization.

12221012222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494416 (or 494407 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12221012222200 its reverse (222221012221), we get a palindrome (12443233234421).

The spelling of 12221012222200 in words is "twelve trillion, two hundred twenty-one billion, twelve million, two hundred twenty-two thousand, two hundred".