11331123123111 has 8 divisors (see below), whose sum is σ = 16481633633664. Its totient is φ = 6867347347320.

The previous prime is 11331123123097. The next prime is 11331123123127. The reversal of 11331123123111 is 11132132113311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11331123123111 - 2²³ = 11331114734503 is a prime.

It is a super-2 number, since 2×11331123123111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331123123181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171683683651 + ... + 171683683716.

It is an arithmetic number, because the mean of its divisors is an integer number (2060204204208).

Almost surely, 2^{11331123123111} is an apocalyptic number.

11331123123111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11331123123111 is a deficient number, since it is larger than the sum of its proper divisors (5150510510553).

11331123123111 is a wasteful number, since it uses less digits than its factorization.

11331123123111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343367367381.

The product of its digits is 324, while the sum is 24.

Adding to 11331123123111 its reverse (11132132113311), we get a palindrome (22463255236422).

The spelling of 11331123123111 in words is "eleven trillion, three hundred thirty-one billion, one hundred twenty-three million, one hundred twenty-three thousand, one hundred eleven".