12111211121130 has 96 divisors (see below), whose sum is σ = 36159788283840. Its totient is φ = 2781522167040.

The previous prime is 12111211121123. The next prime is 12111211121143. The reversal of 12111211121130 is 3112111211121.

12111211121130 is a `hidden beast` number, since 1 + 211 + 1 + 211 + 1 + 211 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 321916627 + ... + 321954246.

It is an arithmetic number, because the mean of its divisors is an integer number (376664461290).

Almost surely, 2^{12111211121130} is an apocalyptic number.

12111211121130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12111211121130 is an abundant number, since it is smaller than the sum of its proper divisors (24048577162710).

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

12111211121130 is a wasteful number, since it uses less digits than its factorization.

12111211121130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643870916 (or 643870913 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 18.

Adding to 12111211121130 its reverse (3112111211121), we get a palindrome (15223322332251).

The spelling of 12111211121130 in words is "twelve trillion, one hundred eleven billion, two hundred eleven million, one hundred twenty-one thousand, one hundred thirty".