212121210230 has 8 divisors (see below), whose sum is σ = 381818178432. Its totient is φ = 84848484088.

The previous prime is 212121210143. The next prime is 212121210247. The reversal of 212121210230 is 32012121212.

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 = 212121210199 and 212121210208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10606060502 + ... + 10606060521.

It is an arithmetic number, because the mean of its divisors is an integer number (47727272304).

Almost surely, 2^212121210230 is an apocalyptic number.

212121210230 is a deficient number, since it is larger than the sum of its proper divisors (169696968202).

212121210230 is a wasteful number, since it uses less digits than its factorization.

212121210230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21212121030.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212121210230 its reverse (32012121212), we get a palindrome (244133331442).

The spelling of 212121210230 in words is "two hundred twelve billion, one hundred twenty-one million, two hundred ten thousand, two hundred thirty".