305022012020 has 96 divisors (see below), whose sum is σ = 701129520000. Its totient is φ = 110544445440.

The previous prime is 305022012013. The next prime is 305022012037. The reversal of 305022012020 is 20210220503.

It is a self number, because there is not a number n which added to its sum of digits gives 305022012020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128321072 + ... + 128323448.

It is an arithmetic number, because the mean of its divisors is an integer number (7303432500).

Almost surely, 2^305022012020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305022012020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350564760000).

305022012020 is an abundant number, since it is smaller than the sum of its proper divisors (396107507980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305022012020 is a wasteful number, since it uses less digits than its factorization.

305022012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4113 (or 4111 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

Adding to 305022012020 its reverse (20210220503), we get a palindrome (325232232523).

The spelling of 305022012020 in words is "three hundred five billion, twenty-two million, twelve thousand, twenty".