12101112111210 has 64 divisors (see below), whose sum is σ = 29080548806400. Its totient is φ = 3222755246592.

The previous prime is 12101112111199. The next prime is 12101112111233. The reversal of 12101112111210 is 1211121110121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12101112111210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283317336 + ... + 283360044.

It is an arithmetic number, because the mean of its divisors is an integer number (454383575100).

Almost surely, 2^{12101112111210} is an apocalyptic number.

12101112111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12101112111210 is an abundant number, since it is smaller than the sum of its proper divisors (16979436695190).

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

12101112111210 is a wasteful number, since it uses less digits than its factorization.

12101112111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54815.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12101112111210 its reverse (1211121110121), we get a palindrome (13312233221331).

The spelling of 12101112111210 in words is "twelve trillion, one hundred one billion, one hundred twelve million, one hundred eleven thousand, two hundred ten".