300320001221 has 4 divisors (see below), whose sum is σ = 303075230700. Its totient is φ = 297564771744.

The previous prime is 300320001199. The next prime is 300320001229. The reversal of 300320001221 is 122100023003.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 197766984100 + 102553017121 = 444710^2 + 320239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-300320001221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 300320001196 and 300320001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (300320001229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1377614576 + ... + 1377614793.

It is an arithmetic number, because the mean of its divisors is an integer number (75768807675).

Almost surely, 2^300320001221 is an apocalyptic number.

It is an amenable number.

300320001221 is a deficient number, since it is larger than the sum of its proper divisors (2755229479).

300320001221 is a wasteful number, since it uses less digits than its factorization.

300320001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755229478.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 300320001221 its reverse (122100023003), we get a palindrome (422420024224).

The spelling of 300320001221 in words is "three hundred billion, three hundred twenty million, one thousand, two hundred twenty-one".