11121102221 has 8 divisors (see below), whose sum is σ = 11140464384. Its totient is φ = 11101757200.

The previous prime is 11121102217. The next prime is 11121102229. The reversal of 11121102221 is 12220112111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11121102221 - 2² = 11121102217 is a prime.

It is a super-2 number, since 2×11121102221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11121102196 and 11121102205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121102229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2082671 + ... + 2088003.

It is an arithmetic number, because the mean of its divisors is an integer number (1392558048).

Almost surely, 2^11121102221 is an apocalyptic number.

It is an amenable number.

11121102221 is a deficient number, since it is larger than the sum of its proper divisors (19362163).

11121102221 is an equidigital number, since it uses as much as digits as its factorization.

11121102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8571.

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

Adding to 11121102221 its reverse (12220112111), we get a palindrome (23341214332).

The spelling of 11121102221 in words is "eleven billion, one hundred twenty-one million, one hundred two thousand, two hundred twenty-one".