11110011221 has 4 divisors (see below), whose sum is σ = 11275832352. Its totient is φ = 10944190092.

The previous prime is 11110011193. The next prime is 11110011247. The reversal of 11110011221 is 12211001111.

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 11110011221 - 2²⁶ = 11042902357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110011251) 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, 82910465 + ... + 82910598.

It is an arithmetic number, because the mean of its divisors is an integer number (2818958088).

Almost surely, 2^11110011221 is an apocalyptic number.

It is an amenable number.

11110011221 is a deficient number, since it is larger than the sum of its proper divisors (165821131).

11110011221 is an equidigital number, since it uses as much as digits as its factorization.

11110011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165821130.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11110011221 its reverse (12211001111), we get a palindrome (23321012332).

The spelling of 11110011221 in words is "eleven billion, one hundred ten million, eleven thousand, two hundred twenty-one".