12102111110020 has 24 divisors (see below), whose sum is σ = 25441101192024. Its totient is φ = 4835764851456.

The previous prime is 12102111109997. The next prime is 12102111110027. The reversal of 12102111110020 is 2001111120121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 547224144516 + 11554886965504 = 739746^2 + 3399248^2 .

It is a super-2 number, since 2×12102111110020² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12102111110027) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 317454999 + ... + 317493118.

It is an arithmetic number, because the mean of its divisors is an integer number (1060045883001).

Almost surely, 2^{12102111110020} is an apocalyptic number.

12102111110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102111110020 is an abundant number, since it is smaller than the sum of its proper divisors (13338990082004).

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

12102111110020 is a wasteful number, since it uses less digits than its factorization.

12102111110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634949079 (or 634949077 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12102111110020 its reverse (2001111120121), we get a palindrome (14103222230141).

The spelling of 12102111110020 in words is "twelve trillion, one hundred two billion, one hundred eleven million, one hundred ten thousand, twenty".