1100001220221 has 8 divisors (see below), whose sum is σ = 1468012631904. Its totient is φ = 732661977680.

The previous prime is 1100001220189. The next prime is 1100001220259. The reversal of 1100001220221 is 1220221000011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1100001220221 - 2⁵ = 1100001220189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100001220197 and 1100001220206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100001220321) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 168038466 + ... + 168045011.

It is an arithmetic number, because the mean of its divisors is an integer number (183501578988).

Almost surely, 2^{1100001220221} is an apocalyptic number.

It is an amenable number.

1100001220221 is a deficient number, since it is larger than the sum of its proper divisors (368011411683).

1100001220221 is a wasteful number, since it uses less digits than its factorization.

1100001220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336084571.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1100001220221 its reverse (1220221000011), we get a palindrome (2320222220232).

The spelling of 1100001220221 in words is "one trillion, one hundred billion, one million, two hundred twenty thousand, two hundred twenty-one".