12101012001221 has 12 divisors (see below), whose sum is σ = 14294686583520. Its totient is φ = 10154695384080.

The previous prime is 12101012001217. The next prime is 12101012001259. The reversal of 12101012001221 is 12210021010121.

It is not a de Polignac number, because 12101012001221 - 2² = 12101012001217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101012001196 and 12101012001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101012001821) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3254708201 + ... + 3254711918.

It is an arithmetic number, because the mean of its divisors is an integer number (1191223881960).

Almost surely, 2^{12101012001221} is an apocalyptic number.

12101012001221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12101012001221 is a deficient number, since it is larger than the sum of its proper divisors (2193674582299).

12101012001221 is a wasteful number, since it uses less digits than its factorization.

12101012001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6509420156 (or 6509420143 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12101012001221 its reverse (12210021010121), we get a palindrome (24311033011342).

The spelling of 12101012001221 in words is "twelve trillion, one hundred one billion, twelve million, one thousand, two hundred twenty-one".