12102120100111 has 4 divisors (see below), whose sum is σ = 12122323974000. Its totient is φ = 12081916226224.

The previous prime is 12102120100087. The next prime is 12102120100127. The reversal of 12102120100111 is 11100102120121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12102120100111 is a prime.

It is a super-2 number, since 2×12102120100111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12102120100091 and 12102120100100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102120100151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10101936046 + ... + 10101937243.

It is an arithmetic number, because the mean of its divisors is an integer number (3030580993500).

Almost surely, 2^{12102120100111} is an apocalyptic number.

12102120100111 is a deficient number, since it is larger than the sum of its proper divisors (20203873889).

12102120100111 is an equidigital number, since it uses as much as digits as its factorization.

12102120100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20203873888.

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

Adding to 12102120100111 its reverse (11100102120121), we get a palindrome (23202222220232).

The spelling of 12102120100111 in words is "twelve trillion, one hundred two billion, one hundred twenty million, one hundred thousand, one hundred eleven".