1100221110221 has 4 divisors (see below), whose sum is σ = 1125807647712. Its totient is φ = 1074634572732.

The previous prime is 1100221110203. The next prime is 1100221110239. The reversal of 1100221110221 is 1220111220011.

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 (1100221110203) and next prime (1100221110239).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1100221110221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100221110196 and 1100221110205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100251110221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12793268681 + ... + 12793268766.

It is an arithmetic number, because the mean of its divisors is an integer number (281451911928).

Almost surely, 2^{1100221110221} is an apocalyptic number.

It is an amenable number.

1100221110221 is a deficient number, since it is larger than the sum of its proper divisors (25586537491).

1100221110221 is an equidigital number, since it uses as much as digits as its factorization.

1100221110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25586537490.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1100221110221 its reverse (1220111220011), we get a palindrome (2320332330232).

The spelling of 1100221110221 in words is "one trillion, one hundred billion, two hundred twenty-one million, one hundred ten thousand, two hundred twenty-one".