4040121141421 has 2 divisors, whose sum is σ = 4040121141422. Its totient is φ = 4040121141420.

The previous prime is 4040121141401. The next prime is 4040121141437. The reversal of 4040121141421 is 1241411210404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3987030530025 + 53090611396 = 1996755^2 + 230414^2 .

It is a cyclic number.

It is not a de Polignac number, because 4040121141421 - 2⁵ = 4040121141389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4040121141401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2020060570710 + 2020060570711.

It is an arithmetic number, because the mean of its divisors is an integer number (2020060570711).

Almost surely, 2^{4040121141421} is an apocalyptic number.

It is an amenable number.

4040121141421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4040121141421 is an equidigital number, since it uses as much as digits as its factorization.

4040121141421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 4040121141421 its reverse (1241411210404), we get a palindrome (5281532351825).

The spelling of 4040121141421 in words is "four trillion, forty billion, one hundred twenty-one million, one hundred forty-one thousand, four hundred twenty-one".