11123101011 has 32 divisors (see below), whose sum is σ = 17284838400. Its totient is φ = 6291125280.

The previous prime is 11123101009. The next prime is 11123101019. The reversal of 11123101011 is 11010132111.

It is not a de Polignac number, because 11123101011 - 2¹ = 11123101009 is a prime.

It is a super-2 number, since 2×11123101011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11123101019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90381 + ... + 174398.

It is an arithmetic number, because the mean of its divisors is an integer number (540151200).

Almost surely, 2^11123101011 is an apocalyptic number.

11123101011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11123101011 is a deficient number, since it is larger than the sum of its proper divisors (6161737389).

11123101011 is a wasteful number, since it uses less digits than its factorization.

11123101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264879.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 11123101011 its reverse (11010132111), we get a palindrome (22133233122).

The spelling of 11123101011 in words is "eleven billion, one hundred twenty-three million, one hundred one thousand, eleven".