30211233330221 has 4 divisors (see below), whose sum is σ = 30233109677244. Its totient is φ = 30189356983200.

The previous prime is 30211233330203. The next prime is 30211233330241. The reversal of 30211233330221 is 12203333211203.

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 3990545593225 + 26220687736996 = 1997635^2 + 5120614^2 .

It is a cyclic number.

It is not a de Polignac number, because 30211233330221 - 2²² = 30211229135917 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 (30211233330241) 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, 10938171440 + ... + 10938174201.

It is an arithmetic number, because the mean of its divisors is an integer number (7558277419311).

Almost surely, 2^{30211233330221} is an apocalyptic number.

It is an amenable number.

30211233330221 is a deficient number, since it is larger than the sum of its proper divisors (21876347023).

30211233330221 is a wasteful number, since it uses less digits than its factorization.

30211233330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21876347022.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 30211233330221 its reverse (12203333211203), we get a palindrome (42414566541424).

The spelling of 30211233330221 in words is "thirty trillion, two hundred eleven billion, two hundred thirty-three million, three hundred thirty thousand, two hundred twenty-one".