707112221 has 2 divisors, whose sum is σ = 707112222. Its totient is φ = 707112220.

The previous prime is 707112169. The next prime is 707112223. The reversal of 707112221 is 122211707.

707112221 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., 670084996 + 37027225 = 25886^2 + 6085^2 .

It is an emirp because it is prime and its reverse (122211707) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 707112221 - 2¹⁸ = 706850077 is a prime.

Together with 707112223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (707112223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353556110 + 353556111.

It is an arithmetic number, because the mean of its divisors is an integer number (353556111).

Almost surely, 2^707112221 is an apocalyptic number.

It is an amenable number.

707112221 is a deficient number, since it is larger than the sum of its proper divisors (1).

707112221 is an equidigital number, since it uses as much as digits as its factorization.

707112221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 707112221 is about 26591.5817694247. The cubic root of 707112221 is about 890.9010027130.

Adding to 707112221 its reverse (122211707), we get a palindrome (829323928).

The spelling of 707112221 in words is "seven hundred seven million, one hundred twelve thousand, two hundred twenty-one".