510403214221 has 2 divisors, whose sum is σ = 510403214222. Its totient is φ = 510403214220.

The previous prime is 510403214149. The next prime is 510403214249. The reversal of 510403214221 is 122412304015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318164811721 + 192238402500 = 564061^2 + 438450^2 .

It is a cyclic number.

It is not a de Polignac number, because 510403214221 - 2²³ = 510394825613 is a prime.

It is a super-2 number, since 2×510403214221² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (510403214261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255201607110 + 255201607111.

It is an arithmetic number, because the mean of its divisors is an integer number (255201607111).

Almost surely, 2^510403214221 is an apocalyptic number.

It is an amenable number.

510403214221 is a deficient number, since it is larger than the sum of its proper divisors (1).

510403214221 is an equidigital number, since it uses as much as digits as its factorization.

510403214221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 510403214221 its reverse (122412304015), we get a palindrome (632815518236).

The spelling of 510403214221 in words is "five hundred ten billion, four hundred three million, two hundred fourteen thousand, two hundred twenty-one".