30205511213213 has 4 divisors (see below), whose sum is σ = 34520584243680. Its totient is φ = 25890438182748.

The previous prime is 30205511213203. The next prime is 30205511213281. The reversal of 30205511213213 is 31231211550203.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30205511213213 - 2³² = 30201216245917 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 (30205511213203) 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, 2157536515223 + ... + 2157536515236.

It is an arithmetic number, because the mean of its divisors is an integer number (8630146060920).

Almost surely, 2^{30205511213213} is an apocalyptic number.

It is an amenable number.

30205511213213 is a deficient number, since it is larger than the sum of its proper divisors (4315073030467).

30205511213213 is an equidigital number, since it uses as much as digits as its factorization.

30205511213213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4315073030466.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 30205511213213 its reverse (31231211550203), we get a palindrome (61436722763416).

The spelling of 30205511213213 in words is "thirty trillion, two hundred five billion, five hundred eleven million, two hundred thirteen thousand, two hundred thirteen".