12221212221202 has 16 divisors (see below), whose sum is σ = 18720837336600. Its totient is φ = 5981465647872.

The previous prime is 12221212221181. The next prime is 12221212221221. The reversal of 12221212221202 is 20212221212221.

12221212221202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6609624504561 + 5611587716641 = 2570919^2 + 2368879^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133088577 + ... + 133180372.

Almost surely, 2^{12221212221202} is an apocalyptic number.

12221212221202 is a deficient number, since it is larger than the sum of its proper divisors (6499625115398).

12221212221202 is a wasteful number, since it uses less digits than its factorization.

12221212221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266269437.

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

Adding to 12221212221202 its reverse (20212221212221), we get a palindrome (32433433433423).

It can be divided in two parts, 12221212221 and 202, that multiplied together give a palindrome (2468684868642).

The spelling of 12221212221202 in words is "twelve trillion, two hundred twenty-one billion, two hundred twelve million, two hundred twenty-one thousand, two hundred two".