305499688112221 has 8 divisors (see below), whose sum is σ = 305710253447040. Its totient is φ = 305289191118912.

The previous prime is 305499688112173. The next prime is 305499688112231. The reversal of 305499688112221 is 122211886994503.

It is a happy number.

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 305499688112221 - 2²⁵ = 305499654557789 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 305499688112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305499688112231) 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, 8140300 + ... + 26024293.

It is an arithmetic number, because the mean of its divisors is an integer number (38213781680880).

Almost surely, 2^{305499688112221} is an apocalyptic number.

It is an amenable number.

305499688112221 is a deficient number, since it is larger than the sum of its proper divisors (210565334819).

305499688112221 is a wasteful number, since it uses less digits than its factorization.

305499688112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34170755.

The product of its (nonzero) digits is 14929920, while the sum is 61.

The spelling of 305499688112221 in words is "three hundred five trillion, four hundred ninety-nine billion, six hundred eighty-eight million, one hundred twelve thousand, two hundred twenty-one".