70306522021 has 2 divisors, whose sum is σ = 70306522022. Its totient is φ = 70306522020.

The previous prime is 70306522007. The next prime is 70306522031. The reversal of 70306522021 is 12022560307.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70073501796 + 233020225 = 264714^2 + 15265^2 .

It is a cyclic number.

It is not a de Polignac number, because 70306522021 - 2⁷ = 70306521893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70306522031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35153261010 + 35153261011.

It is an arithmetic number, because the mean of its divisors is an integer number (35153261011).

Almost surely, 2^70306522021 is an apocalyptic number.

It is an amenable number.

70306522021 is a deficient number, since it is larger than the sum of its proper divisors (1).

70306522021 is an equidigital number, since it uses as much as digits as its factorization.

70306522021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The spelling of 70306522021 in words is "seventy billion, three hundred six million, five hundred twenty-two thousand, twenty-one".