20214304021 has 2 divisors, whose sum is σ = 20214304022. Its totient is φ = 20214304020.

The previous prime is 20214303947. The next prime is 20214304063. The reversal of 20214304021 is 12040341202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20082857796 + 131446225 = 141714^2 + 11465^2 .

It is a cyclic number.

It is not a de Polignac number, because 20214304021 - 2¹¹ = 20214301973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20214304021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20214304321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10107152010 + 10107152011.

It is an arithmetic number, because the mean of its divisors is an integer number (10107152011).

Almost surely, 2^20214304021 is an apocalyptic number.

It is an amenable number.

20214304021 is a deficient number, since it is larger than the sum of its proper divisors (1).

20214304021 is an equidigital number, since it uses as much as digits as its factorization.

20214304021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20214304021 its reverse (12040341202), we get a palindrome (32254645223).

The spelling of 20214304021 in words is "twenty billion, two hundred fourteen million, three hundred four thousand, twenty-one".