212121230030 has 8 divisors (see below), whose sum is σ = 381818214072. Its totient is φ = 84848492008.

The previous prime is 212121230011. The next prime is 212121230053. The reversal of 212121230030 is 30032121212.

212121230030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 212121229990 and 212121230008.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10606061492 + ... + 10606061511.

It is an arithmetic number, because the mean of its divisors is an integer number (47727276759).

Almost surely, 2^212121230030 is an apocalyptic number.

212121230030 is a deficient number, since it is larger than the sum of its proper divisors (169696984042).

212121230030 is a wasteful number, since it uses less digits than its factorization.

212121230030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21212123010.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212121230030 its reverse (30032121212), we get a palindrome (242153351242).

The spelling of 212121230030 in words is "two hundred twelve billion, one hundred twenty-one million, two hundred thirty thousand, thirty".