35220421 has 2 divisors, whose sum is σ = 35220422. Its totient is φ = 35220420.

The previous prime is 35220373. The next prime is 35220499. The reversal of 35220421 is 12402253.

35220421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34975396 + 245025 = 5914^2 + 495^2 .

It is an emirp because it is prime and its reverse (12402253) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 35220421 - 2⁷ = 35220293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35224421) 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, 17610210 + 17610211.

It is an arithmetic number, because the mean of its divisors is an integer number (17610211).

Almost surely, 2^35220421 is an apocalyptic number.

It is an amenable number.

35220421 is a deficient number, since it is larger than the sum of its proper divisors (1).

35220421 is an equidigital number, since it uses as much as digits as its factorization.

35220421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 35220421 is about 5934.6795195697. The cubic root of 35220421 is about 327.7918723508.

Adding to 35220421 its reverse (12402253), we get a palindrome (47622674).

The spelling of 35220421 in words is "thirty-five million, two hundred twenty thousand, four hundred twenty-one".