10121323111 has 2 divisors, whose sum is σ = 10121323112. Its totient is φ = 10121323110.

The previous prime is 10121323109. The next prime is 10121323117. The reversal of 10121323111 is 11132312101.

It is a happy number.

10121323111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (11132312101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10121323111 - 2¹ = 10121323109 is a prime.

Together with 10121323109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10121323117) 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 as a sum of consecutive naturals, namely, 5060661555 + 5060661556.

It is an arithmetic number, because the mean of its divisors is an integer number (5060661556).

Almost surely, 2^10121323111 is an apocalyptic number.

10121323111 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121323111 is an equidigital number, since it uses as much as digits as its factorization.

10121323111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 10121323111 its reverse (11132312101), we get a palindrome (21253635212).

It can be divided in two parts, 10 and 121323111, that added together give a palindrome (121323121).

The spelling of 10121323111 in words is "ten billion, one hundred twenty-one million, three hundred twenty-three thousand, one hundred eleven".