12221201222222 has 8 divisors (see below), whose sum is σ = 18334455944376. Its totient is φ = 6109715907432.

The previous prime is 12221201222213. The next prime is 12221201222233. The reversal of 12221201222222 is 22222210212221.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442334573 + ... + 442362200.

It is an arithmetic number, because the mean of its divisors is an integer number (2291806993047).

Almost surely, 2^{12221201222222} is an apocalyptic number.

12221201222222 is a deficient number, since it is larger than the sum of its proper divisors (6113254722154).

12221201222222 is an equidigital number, since it uses as much as digits as its factorization.

12221201222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884703682.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 12221201222222 its reverse (22222210212221), we get a palindrome (34443411434443).

The spelling of 12221201222222 in words is "twelve trillion, two hundred twenty-one billion, two hundred one million, two hundred twenty-two thousand, two hundred twenty-two".