2121424111 has 2 divisors, whose sum is σ = 2121424112. Its totient is φ = 2121424110.

The previous prime is 2121424103. The next prime is 2121424121. The reversal of 2121424111 is 1114241212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121424111 - 2³ = 2121424103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121424121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060712055 + 1060712056.

It is an arithmetic number, because the mean of its divisors is an integer number (1060712056).

Almost surely, 2^2121424111 is an apocalyptic number.

2121424111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121424111 is an equidigital number, since it uses as much as digits as its factorization.

2121424111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 128, while the sum is 19.

The square root of 2121424111 is about 46058.9199938514. The cubic root of 2121424111 is about 1284.9192439674.

Adding to 2121424111 its reverse (1114241212), we get a palindrome (3235665323).

The spelling of 2121424111 in words is "two billion, one hundred twenty-one million, four hundred twenty-four thousand, one hundred eleven".