1213210212 has 48 divisors (see below), whose sum is σ = 2882023872. Its totient is φ = 397111680.

The previous prime is 1213210181. The next prime is 1213210259. The reversal of 1213210212 is 2120123121.

It is a junction number, because it is equal to n+sod(n) for n = 1213210191 and 1213210200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645418 + ... + 647294.

It is an arithmetic number, because the mean of its divisors is an integer number (60042164).

Almost surely, 2^1213210212 is an apocalyptic number.

1213210212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213210212 is an abundant number, since it is smaller than the sum of its proper divisors (1668813660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213210212 is a wasteful number, since it uses less digits than its factorization.

1213210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828 (or 2826 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1213210212 is about 34831.1672500363. The cubic root of 1213210212 is about 1066.5437762504.

Adding to 1213210212 its reverse (2120123121), we get a palindrome (3333333333).

The spelling of 1213210212 in words is "one billion, two hundred thirteen million, two hundred ten thousand, two hundred twelve".