51034214221 has 2 divisors, whose sum is σ = 51034214222. Its totient is φ = 51034214220.

The previous prime is 51034214207. The next prime is 51034214227. The reversal of 51034214221 is 12241243015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47911080996 + 3123133225 = 218886^2 + 55885^2 .

It is a cyclic number.

It is not a de Polignac number, because 51034214221 - 2⁷ = 51034214093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51034214227) 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, 25517107110 + 25517107111.

It is an arithmetic number, because the mean of its divisors is an integer number (25517107111).

Almost surely, 2^51034214221 is an apocalyptic number.

It is an amenable number.

51034214221 is a deficient number, since it is larger than the sum of its proper divisors (1).

51034214221 is an equidigital number, since it uses as much as digits as its factorization.

51034214221 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 51034214221 its reverse (12241243015), we get a palindrome (63275457236).

The spelling of 51034214221 in words is "fifty-one billion, thirty-four million, two hundred fourteen thousand, two hundred twenty-one".