712445221 has 2 divisors, whose sum is σ = 712445222. Its totient is φ = 712445220.

The previous prime is 712445189. The next prime is 712445243. The reversal of 712445221 is 122544217.

712445221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 603242721 + 109202500 = 24561^2 + 10450^2 .

It is a cyclic number.

It is not a de Polignac number, because 712445221 - 2⁵ = 712445189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 712445221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (712445281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356222610 + 356222611.

It is an arithmetic number, because the mean of its divisors is an integer number (356222611).

Almost surely, 2^712445221 is an apocalyptic number.

It is an amenable number.

712445221 is a deficient number, since it is larger than the sum of its proper divisors (1).

712445221 is an equidigital number, since it uses as much as digits as its factorization.

712445221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 28.

The square root of 712445221 is about 26691.6695056716. The cubic root of 712445221 is about 893.1351037695.

Adding to 712445221 its reverse (122544217), we get a palindrome (834989438).

The spelling of 712445221 in words is "seven hundred twelve million, four hundred forty-five thousand, two hundred twenty-one".