221214303212 has 12 divisors (see below), whose sum is σ = 442428606480. Its totient is φ = 94806129936.

The previous prime is 221214303157. The next prime is 221214303239. The reversal of 221214303212 is 212303412122.

221214303212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

221214303212 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3950255387 + ... + 3950255442.

It is an arithmetic number, because the mean of its divisors is an integer number (36869050540).

Almost surely, 2^221214303212 is an apocalyptic number.

It is an amenable number.

221214303212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221214303212 is a wasteful number, since it uses less digits than its factorization.

221214303212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7900510840 (or 7900510838 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 221214303212 its reverse (212303412122), we get a palindrome (433517715334).

The spelling of 221214303212 in words is "two hundred twenty-one billion, two hundred fourteen million, three hundred three thousand, two hundred twelve".