1100221021201 has 4 divisors (see below), whose sum is σ = 1102254702004. Its totient is φ = 1098187340400.

The previous prime is 1100221021177. The next prime is 1100221021231. The reversal of 1100221021201 is 1021201220011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 830677302225 + 269543718976 = 911415^2 + 519176^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100221021201 - 2³¹ = 1098073537553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100221021231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1016839590 + ... + 1016840671.

It is an arithmetic number, because the mean of its divisors is an integer number (275563675501).

Almost surely, 2^{1100221021201} is an apocalyptic number.

It is an amenable number.

1100221021201 is a deficient number, since it is larger than the sum of its proper divisors (2033680803).

1100221021201 is an equidigital number, since it uses as much as digits as its factorization.

1100221021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033680802.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1100221021201 its reverse (1021201220011), we get a palindrome (2121422241212).

The spelling of 1100221021201 in words is "one trillion, one hundred billion, two hundred twenty-one million, twenty-one thousand, two hundred one".