30305200111021 has 8 divisors (see below), whose sum is σ = 34800229792800. Its totient is φ = 26100172344240.

The previous prime is 30305200111009. The next prime is 30305200111063. The reversal of 30305200111021 is 12011100250303.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30305200111021 - 2¹¹ = 30305200108973 is a prime.

It is a super-4 number, since 4×30305200111021⁴ (a number of 55 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30305200111021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30305200111001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72500478526 + ... + 72500478943.

It is an arithmetic number, because the mean of its divisors is an integer number (4350028724100).

Almost surely, 2^{30305200111021} is an apocalyptic number.

It is an amenable number.

30305200111021 is a deficient number, since it is larger than the sum of its proper divisors (4495029681779).

30305200111021 is a wasteful number, since it uses less digits than its factorization.

30305200111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145000957499.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 30305200111021 its reverse (12011100250303), we get a palindrome (42316300361324).

The spelling of 30305200111021 in words is "thirty trillion, three hundred five billion, two hundred million, one hundred eleven thousand, twenty-one".