4020204262021 has 2 divisors, whose sum is σ = 4020204262022. Its totient is φ = 4020204262020.

The previous prime is 4020204262007. The next prime is 4020204262091. The reversal of 4020204262021 is 1202624020204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3159968416900 + 860235845121 = 1777630^2 + 927489^2 .

It is a cyclic number.

It is not a de Polignac number, because 4020204262021 - 2¹⁵ = 4020204229253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4020204262091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010102131010 + 2010102131011.

It is an arithmetic number, because the mean of its divisors is an integer number (2010102131011).

Almost surely, 2^{4020204262021} is an apocalyptic number.

It is an amenable number.

4020204262021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020204262021 is an equidigital number, since it uses as much as digits as its factorization.

4020204262021 is an evil number, because the sum of its binary digits is even.

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

Adding to 4020204262021 its reverse (1202624020204), we get a palindrome (5222828282225).

The spelling of 4020204262021 in words is "four trillion, twenty billion, two hundred four million, two hundred sixty-two thousand, twenty-one".