12101210101112 has 64 divisors (see below), whose sum is σ = 25129881331200. Its totient is φ = 5416734090240.

The previous prime is 12101210101073. The next prime is 12101210101133. The reversal of 12101210101112 is 21110101210121.

It is a super-2 number, since 2×12101210101112² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 18360593 + ... + 19008255.

It is an arithmetic number, because the mean of its divisors is an integer number (392654395800).

Almost surely, 2^{12101210101112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12101210101112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12564940665600).

12101210101112 is an abundant number, since it is smaller than the sum of its proper divisors (13028671230088).

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

12101210101112 is a wasteful number, since it uses less digits than its factorization.

12101210101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650916 (or 650912 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12101210101112 its reverse (21110101210121), we get a palindrome (33211311311233).

The spelling of 12101210101112 in words is "twelve trillion, one hundred one billion, two hundred ten million, one hundred one thousand, one hundred twelve".