70026221 has 2 divisors, whose sum is σ = 70026222. Its totient is φ = 70026220.

The previous prime is 70026157. The next prime is 70026223. The reversal of 70026221 is 12262007.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55502500 + 14523721 = 7450^2 + 3811^2 .

It is a cyclic number.

It is not a de Polignac number, because 70026221 - 2⁶ = 70026157 is a prime.

Together with 70026223, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 70026193 and 70026202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70026223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35013110 + 35013111.

It is an arithmetic number, because the mean of its divisors is an integer number (35013111).

Almost surely, 2^70026221 is an apocalyptic number.

It is an amenable number.

70026221 is a deficient number, since it is larger than the sum of its proper divisors (1).

70026221 is an equidigital number, since it uses as much as digits as its factorization.

70026221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 70026221 is about 8368.1671230921. The cubic root of 70026221 is about 412.1799827102.

Adding to 70026221 its reverse (12262007), we get a palindrome (82288228).

The spelling of 70026221 in words is "seventy million, twenty-six thousand, two hundred twenty-one".