212120012330 has 8 divisors (see below), whose sum is σ = 381816022212. Its totient is φ = 84848004928.

The previous prime is 212120012323. The next prime is 212120012369. The reversal of 212120012330 is 33210021212.

It can be written as a sum of positive squares in 2 ways, for example, as 198084634489 + 14035377841 = 445067^2 + 118471^2 .

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

It is a super-3 number, since 3×212120012330³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212120012299 and 212120012308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10606000607 + ... + 10606000626.

Almost surely, 2^212120012330 is an apocalyptic number.

212120012330 is a deficient number, since it is larger than the sum of its proper divisors (169696009882).

212120012330 is a wasteful number, since it uses less digits than its factorization.

212120012330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21212001240.

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

Adding to 212120012330 its reverse (33210021212), we get a palindrome (245330033542).

The spelling of 212120012330 in words is "two hundred twelve billion, one hundred twenty million, twelve thousand, three hundred thirty".