4102121 has 2 divisors, whose sum is σ = 4102122. Its totient is φ = 4102120.

The previous prime is 4102097. The next prime is 4102123. The reversal of 4102121 is 1212014.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3748096 + 354025 = 1936^2 + 595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4102121 is a prime.

Together with 4102123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4102123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2051060 + 2051061.

It is an arithmetic number, because the mean of its divisors is an integer number (2051061).

Almost surely, 2^4102121 is an apocalyptic number.

It is an amenable number.

4102121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4102121 is an equidigital number, since it uses as much as digits as its factorization.

4102121 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 11.

The square root of 4102121 is about 2025.3693490324. The cubic root of 4102121 is about 160.0796608527.

Adding to 4102121 its reverse (1212014), we get a palindrome (5314135).

The spelling of 4102121 in words is "four million, one hundred two thousand, one hundred twenty-one".