4121111 has 2 divisors, whose sum is σ = 4121112. Its totient is φ = 4121110.

The previous prime is 4121107. The next prime is 4121113. The reversal of 4121111 is 1111214.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4121111 - 2² = 4121107 is a prime.

Together with 4121113, it forms a pair of twin primes.

It is a Chen prime.

4121111 is a modest number, since divided by 1111 gives 412 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 4121092 and 4121101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4121113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2060555 + 2060556.

It is an arithmetic number, because the mean of its divisors is an integer number (2060556).

Almost surely, 2^4121111 is an apocalyptic number.

4121111 is a deficient number, since it is larger than the sum of its proper divisors (1).

4121111 is an equidigital number, since it uses as much as digits as its factorization.

4121111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8, while the sum is 11.

The square root of 4121111 is about 2030.0519697781. The cubic root of 4121111 is about 160.3263002444.

Adding to 4121111 its reverse (1111214), we get a palindrome (5232325).

The spelling of 4121111 in words is "four million, one hundred twenty-one thousand, one hundred eleven".