11220111001 has 8 divisors (see below), whose sum is σ = 12274799904. Its totient is φ = 10171201920.

The previous prime is 11220110989. The next prime is 11220111017. The reversal of 11220111001 is 10011102211.

11220111001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11220111001 - 2²⁹ = 10683240089 is a prime.

It is a super-2 number, since 2×11220111001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11220111601) 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 7 ways as a sum of consecutive naturals, for example, 1440891 + ... + 1448656.

It is an arithmetic number, because the mean of its divisors is an integer number (1534349988).

Almost surely, 2^11220111001 is an apocalyptic number.

11220111001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11220111001 is a deficient number, since it is larger than the sum of its proper divisors (1054688903).

11220111001 is a wasteful number, since it uses less digits than its factorization.

11220111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2889911.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11220111001 its reverse (10011102211), we get a palindrome (21231213212).

It can be divided in two parts, 11220 and 111001, that added together give a palindrome (122221).

The spelling of 11220111001 in words is "eleven billion, two hundred twenty million, one hundred eleven thousand, one".