221100122012200 has 48 divisors (see below), whose sum is σ = 517756041180000. Its totient is φ = 87803789449920.

The previous prime is 221100122012131. The next prime is 221100122012201. The reversal of 221100122012200 is 2210221001122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221100122012201) 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 11 ways as a sum of consecutive naturals, for example, 3976593100 + ... + 3976648699.

It is an arithmetic number, because the mean of its divisors is an integer number (10786584191250).

Almost surely, 2^{221100122012200} is an apocalyptic number.

221100122012200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221100122012200 is an abundant number, since it is smaller than the sum of its proper divisors (296655919167800).

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

221100122012200 is a wasteful number, since it uses less digits than its factorization.

221100122012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7953241954 (or 7953241945 counting only the distinct ones).

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

Adding to 221100122012200 its reverse (2210221001122), we get a palindrome (223310343013322).

The spelling of 221100122012200 in words is "two hundred twenty-one trillion, one hundred billion, one hundred twenty-two million, twelve thousand, two hundred".