11023211111 has 24 divisors (see below), whose sum is σ = 12790848000. Its totient is φ = 9419414400.

The previous prime is 11023211107. The next prime is 11023211153. The reversal of 11023211111 is 11111232011.

It is not a de Polignac number, because 11023211111 - 2² = 11023211107 is a prime.

It is a super-2 number, since 2×11023211111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11023211191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3148640 + ... + 3152138.

It is an arithmetic number, because the mean of its divisors is an integer number (532952000).

Almost surely, 2^11023211111 is an apocalyptic number.

11023211111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11023211111 is a deficient number, since it is larger than the sum of its proper divisors (1767636889).

11023211111 is a wasteful number, since it uses less digits than its factorization.

11023211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4535 (or 4518 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11023211111 its reverse (11111232011), we get a palindrome (22134443122).

The spelling of 11023211111 in words is "eleven billion, twenty-three million, two hundred eleven thousand, one hundred eleven".