302030320021 has 16 divisors (see below), whose sum is σ = 321136686720. Its totient is φ = 283073495040.

The previous prime is 302030319991. The next prime is 302030320037. The reversal of 302030320021 is 120023030203.

It is a cyclic number.

It is not a de Polignac number, because 302030320021 - 2¹³ = 302030311829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 302030319977 and 302030320004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302030320621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18477070 + ... + 18493408.

It is an arithmetic number, because the mean of its divisors is an integer number (20071042920).

Almost surely, 2^302030320021 is an apocalyptic number.

It is an amenable number.

302030320021 is a deficient number, since it is larger than the sum of its proper divisors (19106366699).

302030320021 is a wasteful number, since it uses less digits than its factorization.

302030320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20844.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 302030320021 its reverse (120023030203), we get a palindrome (422053350224).

The spelling of 302030320021 in words is "three hundred two billion, thirty million, three hundred twenty thousand, twenty-one".