2021334304021 has 2 divisors, whose sum is σ = 2021334304022. Its totient is φ = 2021334304020.

The previous prime is 2021334304007. The next prime is 2021334304049. The reversal of 2021334304021 is 1204034331202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1996145122500 + 25189181521 = 1412850^2 + 158711^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021334304021 - 2¹³ = 2021334295829 is a prime.

It is a super-2 number, since 2×2021334304021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021334304001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010667152010 + 1010667152011.

It is an arithmetic number, because the mean of its divisors is an integer number (1010667152011).

Almost surely, 2^{2021334304021} is an apocalyptic number.

It is an amenable number.

2021334304021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021334304021 is an equidigital number, since it uses as much as digits as its factorization.

2021334304021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 2021334304021 its reverse (1204034331202), we get a palindrome (3225368635223).

The spelling of 2021334304021 in words is "two trillion, twenty-one billion, three hundred thirty-four million, three hundred four thousand, twenty-one".