300021020205 has 32 divisors (see below), whose sum is σ = 481178928000. Its totient is φ = 159629771520.

The previous prime is 300021020191. The next prime is 300021020213. The reversal of 300021020205 is 502020120003.

It is not a de Polignac number, because 300021020205 - 2⁷ = 300021020077 is a prime.

It is a super-2 number, since 2×300021020205² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16894671 + ... + 16912419.

It is an arithmetic number, because the mean of its divisors is an integer number (15036841500).

Almost surely, 2^300021020205 is an apocalyptic number.

It is an amenable number.

300021020205 is a deficient number, since it is larger than the sum of its proper divisors (181157907795).

300021020205 is a wasteful number, since it uses less digits than its factorization.

300021020205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20381.

The product of its (nonzero) digits is 120, while the sum is 15.

Adding to 300021020205 its reverse (502020120003), we get a palindrome (802041140208).

The spelling of 300021020205 in words is "three hundred billion, twenty-one million, twenty thousand, two hundred five".