121424111113 has 2 divisors, whose sum is σ = 121424111114. Its totient is φ = 121424111112.

The previous prime is 121424111089. The next prime is 121424111153. The reversal of 121424111113 is 311111424121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113509695744 + 7914415369 = 336912^2 + 88963^2 .

It is a cyclic number.

It is not a de Polignac number, because 121424111113 - 2⁹ = 121424110601 is a prime.

It is not a weakly prime, because it can be changed into another prime (121424111153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60712055556 + 60712055557.

It is an arithmetic number, because the mean of its divisors is an integer number (60712055557).

Almost surely, 2^121424111113 is an apocalyptic number.

It is an amenable number.

121424111113 is a deficient number, since it is larger than the sum of its proper divisors (1).

121424111113 is an equidigital number, since it uses as much as digits as its factorization.

121424111113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 22.

Adding to 121424111113 its reverse (311111424121), we get a palindrome (432535535234).

The spelling of 121424111113 in words is "one hundred twenty-one billion, four hundred twenty-four million, one hundred eleven thousand, one hundred thirteen".