12221201212222 has 8 divisors (see below), whose sum is σ = 18331847545536. Its totient is φ = 6110585363712.

The previous prime is 12221201212211. The next prime is 12221201212249. The reversal of 12221201212222 is 22221210212221.

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

It is a junction number, because it is equal to n+sod(n) for n = 12221201212193 and 12221201212202.

It is a congruent number.

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, 6591118 + ... + 8239249.

It is an arithmetic number, because the mean of its divisors is an integer number (2291480943192).

Almost surely, 2^{12221201212222} is an apocalyptic number.

12221201212222 is a deficient number, since it is larger than the sum of its proper divisors (6110646333314).

12221201212222 is a wasteful number, since it uses less digits than its factorization.

12221201212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15242402.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 12221201212222 its reverse (22221210212221), we get a palindrome (34442411424443).

It can be divided in two parts, 1222120 and 1212222, that added together give a palindrome (2434342).

The spelling of 12221201212222 in words is "twelve trillion, two hundred twenty-one billion, two hundred one million, two hundred twelve thousand, two hundred twenty-two".