10221221222200 has 24 divisors (see below), whose sum is σ = 23764339342080. Its totient is φ = 4088488488800.

The previous prime is 10221221222081. The next prime is 10221221222227. The reversal of 10221221222200 is 222212212201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25553052856 + ... + 25553053255.

It is an arithmetic number, because the mean of its divisors is an integer number (990180805920).

Almost surely, 2^{10221221222200} is an apocalyptic number.

10221221222200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221221222200 is an abundant number, since it is smaller than the sum of its proper divisors (13543118119880).

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

10221221222200 is a wasteful number, since it uses less digits than its factorization.

10221221222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51106106127 (or 51106106118 counting only the distinct ones).

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

Adding to 10221221222200 its reverse (222212212201), we get a palindrome (10443433434401).

Subtracting from 10221221222200 its reverse (222212212201), we obtain a palindrome (9999009009999).

The spelling of 10221221222200 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred".