175420970221 has 12 divisors (see below), whose sum is σ = 205251902112. Its totient is φ = 146864057256.

The previous prime is 175420970203. The next prime is 175420970227. The reversal of 175420970221 is 122079024571.

It is not a de Polignac number, because 175420970221 - 2²⁹ = 174884099309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (175420970227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6763731 + ... + 6789616.

It is an arithmetic number, because the mean of its divisors is an integer number (17104325176).

Almost surely, 2^175420970221 is an apocalyptic number.

It is an amenable number.

175420970221 is a deficient number, since it is larger than the sum of its proper divisors (29830931891).

175420970221 is an equidigital number, since it uses as much as digits as its factorization.

175420970221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13553440 (or 13553397 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

Adding to 175420970221 its reverse (122079024571), we get a palindrome (297499994792).

The spelling of 175420970221 in words is "one hundred seventy-five billion, four hundred twenty million, nine hundred seventy thousand, two hundred twenty-one".