12201021212122 has 32 divisors (see below), whose sum is σ = 18388330585344. Its totient is φ = 6071632257600.

The previous prime is 12201021212087. The next prime is 12201021212203. The reversal of 12201021212122 is 22121212010221.

It is a self number, because there is not a number n which added to its sum of digits gives 12201021212122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3191476303 + ... + 3191480125.

It is an arithmetic number, because the mean of its divisors is an integer number (574635330792).

Almost surely, 2^{12201021212122} is an apocalyptic number.

12201021212122 is a deficient number, since it is larger than the sum of its proper divisors (6187309373222).

12201021212122 is a wasteful number, since it uses less digits than its factorization.

12201021212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9094.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12201021212122 its reverse (22121212010221), we get a palindrome (34322233222343).

The spelling of 12201021212122 in words is "twelve trillion, two hundred one billion, twenty-one million, two hundred twelve thousand, one hundred twenty-two".