12122101021111 has 2 divisors, whose sum is σ = 12122101021112. Its totient is φ = 12122101021110.

The previous prime is 12122101021097. The next prime is 12122101021193. The reversal of 12122101021111 is 11112010122121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12122101021111 - 2⁷ = 12122101020983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12122101021411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061050510555 + 6061050510556.

It is an arithmetic number, because the mean of its divisors is an integer number (6061050510556).

Almost surely, 2^{12122101021111} is an apocalyptic number.

12122101021111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122101021111 is an equidigital number, since it uses as much as digits as its factorization.

12122101021111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 12122101021111 its reverse (11112010122121), we get a palindrome (23234111143232).

It can be divided in two parts, 121221010 and 21111, that added together give a palindrome (121242121).

The spelling of 12122101021111 in words is "twelve trillion, one hundred twenty-two billion, one hundred one million, twenty-one thousand, one hundred eleven".