1230213212 has 12 divisors (see below), whose sum is σ = 2157780240. Its totient is φ = 613704576.

The previous prime is 1230213181. The next prime is 1230213217. The reversal of 1230213212 is 2123120321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230213217) 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, 348533 + ... + 352044.

It is an arithmetic number, because the mean of its divisors is an integer number (179815020).

Almost surely, 2^1230213212 is an apocalyptic number.

It is an amenable number.

1230213212 is a deficient number, since it is larger than the sum of its proper divisors (927567028).

1230213212 is a wasteful number, since it uses less digits than its factorization.

1230213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701020 (or 701018 counting only the distinct ones).

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

The square root of 1230213212 is about 35074.3953903699. The cubic root of 1230213212 is about 1071.5031750939.

Adding to 1230213212 its reverse (2123120321), we get a palindrome (3353333533).

The spelling of 1230213212 in words is "one billion, two hundred thirty million, two hundred thirteen thousand, two hundred twelve".