12021100210111 has 2 divisors, whose sum is σ = 12021100210112. Its totient is φ = 12021100210110.

The previous prime is 12021100210109. The next prime is 12021100210177. The reversal of 12021100210111 is 11101200112021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12021100210111 - 2¹ = 12021100210109 is a prime.

Together with 12021100210109, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12021100210091 and 12021100210100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021100219111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010550105055 + 6010550105056.

It is an arithmetic number, because the mean of its divisors is an integer number (6010550105056).

Almost surely, 2^{12021100210111} is an apocalyptic number.

12021100210111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021100210111 is an equidigital number, since it uses as much as digits as its factorization.

12021100210111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 12021100210111 its reverse (11101200112021), we get a palindrome (23122300322132).

The spelling of 12021100210111 in words is "twelve trillion, twenty-one billion, one hundred million, two hundred ten thousand, one hundred eleven".