4220134042021 has 2 divisors, whose sum is σ = 4220134042022. Its totient is φ = 4220134042020.

The previous prime is 4220134041973. The next prime is 4220134042037. The reversal of 4220134042021 is 1202404310224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2672881661025 + 1547252380996 = 1634895^2 + 1243886^2 .

It is a cyclic number.

It is not a de Polignac number, because 4220134042021 - 2⁹ = 4220134041509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4223134042021) 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, 2110067021010 + 2110067021011.

It is an arithmetic number, because the mean of its divisors is an integer number (2110067021011).

Almost surely, 2^{4220134042021} is an apocalyptic number.

It is an amenable number.

4220134042021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4220134042021 is an equidigital number, since it uses as much as digits as its factorization.

4220134042021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 4220134042021 its reverse (1202404310224), we get a palindrome (5422538352245).

The spelling of 4220134042021 in words is "four trillion, two hundred twenty billion, one hundred thirty-four million, forty-two thousand, twenty-one".