12102201232121 has 48 divisors (see below), whose sum is σ = 16440715200000. Its totient is φ = 8668456030080.

The previous prime is 12102201232111. The next prime is 12102201232129. The reversal of 12102201232121 is 12123210220121.

It is not a de Polignac number, because 12102201232121 - 2¹⁸ = 12102200969977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12102201232093 and 12102201232102.

It is not an unprimeable number, because it can be changed into a prime (12102201232129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 332255 + ... + 4931003.

It is an arithmetic number, because the mean of its divisors is an integer number (342514900000).

Almost surely, 2^{12102201232121} is an apocalyptic number.

12102201232121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12102201232121 is a deficient number, since it is larger than the sum of its proper divisors (4338513967879).

12102201232121 is a wasteful number, since it uses less digits than its factorization.

12102201232121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4599030 (or 4599019 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12102201232121 its reverse (12123210220121), we get a palindrome (24225411452242).

The spelling of 12102201232121 in words is "twelve trillion, one hundred two billion, two hundred one million, two hundred thirty-two thousand, one hundred twenty-one".