30000311231221 has 16 divisors (see below), whose sum is σ = 30114368340480. Its totient is φ = 29886487254000.

The previous prime is 30000311231197. The next prime is 30000311231333. The reversal of 30000311231221 is 12213211300003.

It is a cyclic number.

It is not a de Polignac number, because 30000311231221 - 2⁹ = 30000311230709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000311231021) 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, 1290268846 + ... + 1290292096.

It is an arithmetic number, because the mean of its divisors is an integer number (1882148021280).

Almost surely, 2^{30000311231221} is an apocalyptic number.

It is an amenable number.

30000311231221 is a deficient number, since it is larger than the sum of its proper divisors (114057109259).

30000311231221 is a wasteful number, since it uses less digits than its factorization.

30000311231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28056.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 30000311231221 its reverse (12213211300003), we get a palindrome (42213522531224).

The spelling of 30000311231221 in words is "thirty trillion, three hundred eleven million, two hundred thirty-one thousand, two hundred twenty-one".