11111122011 has 8 divisors (see below), whose sum is σ = 16161632064. Its totient is φ = 6734013320.

The previous prime is 11111122007. The next prime is 11111122039. The reversal of 11111122011 is 11022111111.

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 11111122011 - 2² = 11111122007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11111122051) 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, 168350301 + ... + 168350366.

It is an arithmetic number, because the mean of its divisors is an integer number (2020204008).

Almost surely, 2^11111122011 is an apocalyptic number.

11111122011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11111122011 is a deficient number, since it is larger than the sum of its proper divisors (5050510053).

11111122011 is a wasteful number, since it uses less digits than its factorization.

11111122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336700681.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11111122011 its reverse (11022111111), we get a palindrome (22133233122).

The spelling of 11111122011 in words is "eleven billion, one hundred eleven million, one hundred twenty-two thousand, eleven".