12111211011000 has 128 divisors (see below), whose sum is σ = 37848029356800. Its totient is φ = 3224438236800.

The previous prime is 12111211010999. The next prime is 12111211011001. The reversal of 12111211011000 is 11011211121.

It is an interprime number because it is at equal distance from previous prime (12111211010999) and next prime (12111211011001).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111211011001) 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, 1403962 + ... + 5117961.

It is an arithmetic number, because the mean of its divisors is an integer number (295687729350).

Almost surely, 2^{12111211011000} is an apocalyptic number.

12111211011000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111211011000 is an abundant number, since it is smaller than the sum of its proper divisors (25736818345800).

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

12111211011000 is a wasteful number, since it uses less digits than its factorization.

12111211011000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6522566 (or 6522552 counting only the distinct ones).

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

Adding to 12111211011000 its reverse (11011211121), we get a palindrome (12122222222121).

The spelling of 12111211011000 in words is "twelve trillion, one hundred eleven billion, two hundred eleven million, eleven thousand".