355304120221 has 8 divisors (see below), whose sum is σ = 370797160320. Its totient is φ = 339814833072.

The previous prime is 355304120203. The next prime is 355304120261. The reversal of 355304120221 is 122021403553.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 355304120221 - 2¹³ = 355304112029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 355304120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355304120261) 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 7 ways as a sum of consecutive naturals, for example, 743905 + ... + 1124278.

It is an arithmetic number, because the mean of its divisors is an integer number (46349645040).

Almost surely, 2^355304120221 is an apocalyptic number.

It is an amenable number.

355304120221 is a deficient number, since it is larger than the sum of its proper divisors (15493040099).

355304120221 is a wasteful number, since it uses less digits than its factorization.

355304120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876475.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 355304120221 its reverse (122021403553), we get a palindrome (477325523774).

The spelling of 355304120221 in words is "three hundred fifty-five billion, three hundred four million, one hundred twenty thousand, two hundred twenty-one".