221100220012200 has 96 divisors (see below), whose sum is σ = 685883055987360. Its totient is φ = 58919424352000.

The previous prime is 221100220012183. The next prime is 221100220012213. The reversal of 221100220012200 is 2210022001122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 221100220012200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126110919 + ... + 127852118.

It is an arithmetic number, because the mean of its divisors is an integer number (7144615166535).

Almost surely, 2^{221100220012200} is an apocalyptic number.

221100220012200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221100220012200 is an abundant number, since it is smaller than the sum of its proper divisors (464782835975160).

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

221100220012200 is a wasteful number, since it uses less digits than its factorization.

221100220012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253964507 (or 253964498 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221100220012200 its reverse (2210022001122), we get a palindrome (223310242013322).

The spelling of 221100220012200 in words is "two hundred twenty-one trillion, one hundred billion, two hundred twenty million, twelve thousand, two hundred".