12201222121222 has 64 divisors (see below), whose sum is σ = 19951677554688. Its totient is φ = 5579314884000.

The previous prime is 12201222121201. The next prime is 12201222121237. The reversal of 12201222121222 is 22212122210221.

It is a junction number, because it is equal to n+sod(n) for n = 12201222121193 and 12201222121202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42261097 + ... + 42548827.

It is an arithmetic number, because the mean of its divisors is an integer number (311744961792).

Almost surely, 2^{12201222121222} is an apocalyptic number.

12201222121222 is a deficient number, since it is larger than the sum of its proper divisors (7750455433466).

12201222121222 is a wasteful number, since it uses less digits than its factorization.

12201222121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288145.

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

Adding to 12201222121222 its reverse (22212122210221), we get a palindrome (34413344331443).

The spelling of 12201222121222 in words is "twelve trillion, two hundred one billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-two".