30212121233 has 4 divisors (see below), whose sum is σ = 34528138560. Its totient is φ = 25896103908.

The previous prime is 30212121221. The next prime is 30212121271. The reversal of 30212121233 is 33212121203.

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 30212121233 - 2⁸ = 30212120977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30212121283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2158008653 + ... + 2158008666.

It is an arithmetic number, because the mean of its divisors is an integer number (8632034640).

Almost surely, 2^30212121233 is an apocalyptic number.

It is an amenable number.

30212121233 is a deficient number, since it is larger than the sum of its proper divisors (4316017327).

30212121233 is an equidigital number, since it uses as much as digits as its factorization.

30212121233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4316017326.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30212121233 its reverse (33212121203), we get a palindrome (63424242436).

The spelling of 30212121233 in words is "thirty billion, two hundred twelve million, one hundred twenty-one thousand, two hundred thirty-three".