11111103211 has 8 divisors (see below), whose sum is σ = 12071697120. Its totient is φ = 10165636992.

The previous prime is 11111103203. The next prime is 11111103229. The reversal of 11111103211 is 11230111111.

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 11111103211 - 2³ = 11111103203 is a prime.

It is a super-2 number, since 2×11111103211² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11111103191 and 11111103200.

It is not an unprimeable number, because it can be changed into a prime (11111107211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3780391 + ... + 3783328.

It is an arithmetic number, because the mean of its divisors is an integer number (1508962140).

Almost surely, 2^11111103211 is an apocalyptic number.

11111103211 is a deficient number, since it is larger than the sum of its proper divisors (960593909).

11111103211 is a wasteful number, since it uses less digits than its factorization.

11111103211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7563845.

The product of its (nonzero) digits is 6, while the sum is 13.

Adding to 11111103211 its reverse (11230111111), we get a palindrome (22341214322).

The spelling of 11111103211 in words is "eleven billion, one hundred eleven million, one hundred three thousand, two hundred eleven".