12201221220122 has 64 divisors (see below), whose sum is σ = 20721101228928. Its totient is φ = 5341085568000.

The previous prime is 12201221220103. The next prime is 12201221220179. The reversal of 12201221220122 is 22102212210221.

12201221220122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12201221220094 and 12201221220103.

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, 12966797 + ... + 13875887.

It is an arithmetic number, because the mean of its divisors is an integer number (323767206702).

Almost surely, 2^{12201221220122} is an apocalyptic number.

12201221220122 is a deficient number, since it is larger than the sum of its proper divisors (8519880008806).

12201221220122 is a wasteful number, since it uses less digits than its factorization.

12201221220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909375.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12201221220122 its reverse (22102212210221), we get a palindrome (34303433430343).

Subtracting 12201221220122 from its reverse (22102212210221), we obtain a palindrome (9900990990099).

The spelling of 12201221220122 in words is "twelve trillion, two hundred one billion, two hundred twenty-one million, two hundred twenty thousand, one hundred twenty-two".