12101022212112 has 100 divisors (see below), whose sum is σ = 35087900138896. Its totient is φ = 4026299659200.

The previous prime is 12101022212057. The next prime is 12101022212113. The reversal of 12101022212112 is 21121222010121.

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

It is not an unprimeable number, because it can be changed into a prime (12101022212113) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7826014 + ... + 9243837.

Almost surely, 2^{12101022212112} is an apocalyptic number.

12101022212112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12101022212112 is an abundant number, since it is smaller than the sum of its proper divisors (22986877926784).

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

12101022212112 is a wasteful number, since it uses less digits than its factorization.

12101022212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17070418 (or 17070403 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12101022212112 its reverse (21121222010121), we get a palindrome (33222244222233).

The spelling of 12101022212112 in words is "twelve trillion, one hundred one billion, twenty-two million, two hundred twelve thousand, one hundred twelve".