1100221020121 has 4 divisors (see below), whose sum is σ = 1148056716672. Its totient is φ = 1052385323572.

The previous prime is 1100221020109. The next prime is 1100221020133. The reversal of 1100221020121 is 1210201220011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1100221020109) and next prime (1100221020133).

It is a cyclic number.

It is not a de Polignac number, because 1100221020121 - 2⁵ = 1100221020089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100221020161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23917848241 + ... + 23917848286.

It is an arithmetic number, because the mean of its divisors is an integer number (287014179168).

Almost surely, 2^{1100221020121} is an apocalyptic number.

It is an amenable number.

1100221020121 is a deficient number, since it is larger than the sum of its proper divisors (47835696551).

1100221020121 is an equidigital number, since it uses as much as digits as its factorization.

1100221020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47835696550.

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

Adding to 1100221020121 its reverse (1210201220011), we get a palindrome (2310422240132).

The spelling of 1100221020121 in words is "one trillion, one hundred billion, two hundred twenty-one million, twenty thousand, one hundred twenty-one".