212220231212 has 12 divisors (see below), whose sum is σ = 405147714216. Its totient is φ = 96463741440.

The previous prime is 212220231193. The next prime is 212220231227. The reversal of 212220231212 is 212132022212.

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, 2411593493 + ... + 2411593580.

It is an arithmetic number, because the mean of its divisors is an integer number (33762309518).

Almost surely, 2^212220231212 is an apocalyptic number.

212220231212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212220231212 is a deficient number, since it is larger than the sum of its proper divisors (192927483004).

212220231212 is a wasteful number, since it uses less digits than its factorization.

212220231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823187088 (or 4823187086 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 212220231212 its reverse (212132022212), we get a palindrome (424352253424).

The spelling of 212220231212 in words is "two hundred twelve billion, two hundred twenty million, two hundred thirty-one thousand, two hundred twelve".