12111211123000 has 128 divisors (see below), whose sum is σ = 31205562336000. Its totient is φ = 4362916752000.

The previous prime is 12111211122977. The next prime is 12111211123001. The reversal of 12111211123000 is 32111211121.

It is a happy number.

It is a super-2 number, since 2×12111211123000² (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 (12111211123001) 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 31 ways as a sum of consecutive naturals, for example, 3967950 + ... + 6321949.

It is an arithmetic number, because the mean of its divisors is an integer number (243793455750).

Almost surely, 2^{12111211123000} is an apocalyptic number.

12111211123000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111211123000 is an abundant number, since it is smaller than the sum of its proper divisors (19094351213000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12111211123000 is a wasteful number, since it uses less digits than its factorization.

12111211123000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10290038 (or 10290024 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 12111211123000 its reverse (32111211121), we get a palindrome (12143322334121).

The spelling of 12111211123000 in words is "twelve trillion, one hundred eleven billion, two hundred eleven million, one hundred twenty-three thousand".