11100020221 has 4 divisors (see below), whose sum is σ = 11336190912. Its totient is φ = 10863849532.

The previous prime is 11100020219. The next prime is 11100020227. The reversal of 11100020221 is 12202000111.

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 a cyclic number.

It is not a de Polignac number, because 11100020221 - 2¹ = 11100020219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11100020198 and 11100020207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100020227) 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, 118085275 + ... + 118085368.

It is an arithmetic number, because the mean of its divisors is an integer number (2834047728).

Almost surely, 2^11100020221 is an apocalyptic number.

It is an amenable number.

11100020221 is a deficient number, since it is larger than the sum of its proper divisors (236170691).

11100020221 is an equidigital number, since it uses as much as digits as its factorization.

11100020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236170690.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11100020221 its reverse (12202000111), we get a palindrome (23302020332).

The spelling of 11100020221 in words is "eleven billion, one hundred million, twenty thousand, two hundred twenty-one".