221100002220220 has 24 divisors (see below), whose sum is σ = 464338349774208. Its totient is φ = 88434601819200.

The previous prime is 221100002220217. The next prime is 221100002220257. The reversal of 221100002220220 is 22022200001122.

It is a junction number, because it is equal to n+sod(n) for n = 221100002220194 and 221100002220203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337105996 + ... + 337761235.

It is an arithmetic number, because the mean of its divisors is an integer number (19347431240592).

Almost surely, 2^{221100002220220} is an apocalyptic number.

221100002220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221100002220220 is an abundant number, since it is smaller than the sum of its proper divisors (243238347553988).

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

221100002220220 is a wasteful number, since it uses less digits than its factorization.

221100002220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674883621 (or 674883619 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221100002220220 its reverse (22022200001122), we get a palindrome (243122202221342).

The spelling of 221100002220220 in words is "two hundred twenty-one trillion, one hundred billion, two million, two hundred twenty thousand, two hundred twenty".