11013311111 has 4 divisors (see below), whose sum is σ = 12014521224. Its totient is φ = 10012101000.

The previous prime is 11013311077. The next prime is 11013311117. The reversal of 11013311111 is 11111331011.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11013311111 - 2²⁶ = 10946202247 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 (11013311117) 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, 500605040 + ... + 500605061.

It is an arithmetic number, because the mean of its divisors is an integer number (3003630306).

Almost surely, 2^11013311111 is an apocalyptic number.

11013311111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11013311111 is a deficient number, since it is larger than the sum of its proper divisors (1001210113).

11013311111 is a wasteful number, since it uses less digits than its factorization.

11013311111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001210112.

The product of its (nonzero) digits is 9, while the sum is 14.

Adding to 11013311111 its reverse (11111331011), we get a palindrome (22124642122).

The spelling of 11013311111 in words is "eleven billion, thirteen million, three hundred eleven thousand, one hundred eleven".