300210230021221 has 4 divisors (see below), whose sum is σ = 323303324638252. Its totient is φ = 277117135404192.

The previous prime is 300210230021111. The next prime is 300210230021291. The reversal of 300210230021221 is 122120032012003.

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 198204471977121 + 102005758044100 = 14078511^2 + 10099790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-300210230021221 is a prime.

It is a super-2 number, since 2×300210230021221² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (300210230021291) 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, 11546547308496 + ... + 11546547308521.

It is an arithmetic number, because the mean of its divisors is an integer number (80825831159563).

Almost surely, 2^{300210230021221} is an apocalyptic number.

It is an amenable number.

300210230021221 is a deficient number, since it is larger than the sum of its proper divisors (23093094617031).

300210230021221 is a wasteful number, since it uses less digits than its factorization.

300210230021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23093094617030.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 300210230021221 its reverse (122120032012003), we get a palindrome (422330262033224).

The spelling of 300210230021221 in words is "three hundred trillion, two hundred ten billion, two hundred thirty million, twenty-one thousand, two hundred twenty-one".