4001341021 has 2 divisors, whose sum is σ = 4001341022. Its totient is φ = 4001341020.

The previous prime is 4001341007. The next prime is 4001341037. The reversal of 4001341021 is 1201431004.

It is an a-pointer prime, because the next prime (4001341037) can be obtained adding 4001341021 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3870581796 + 130759225 = 62214^2 + 11435^2 .

It is a cyclic number.

It is not a de Polignac number, because 4001341021 - 2¹⁵ = 4001308253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4001340986 and 4001341004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4001341621) 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, 2000670510 + 2000670511.

It is an arithmetic number, because the mean of its divisors is an integer number (2000670511).

Almost surely, 2^4001341021 is an apocalyptic number.

It is an amenable number.

4001341021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001341021 is an equidigital number, since it uses as much as digits as its factorization.

4001341021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 4001341021 is about 63256.1540168227. The cubic root of 4001341021 is about 1587.5784269932.

Adding to 4001341021 its reverse (1201431004), we get a palindrome (5202772025).

The spelling of 4001341021 in words is "four billion, one million, three hundred forty-one thousand, twenty-one".