12101000000221 has 16 divisors (see below), whose sum is σ = 13425076209600. Its totient is φ = 10814261286400.

The previous prime is 12101000000203. The next prime is 12101000000231. The reversal of 12101000000221 is 12200000010121.

It is not a de Polignac number, because 12101000000221 - 2²³ = 12100991611613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12101000000198 and 12101000000207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101000000231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46703295 + ... + 46961683.

It is an arithmetic number, because the mean of its divisors is an integer number (839067263100).

Almost surely, 2^{12101000000221} is an apocalyptic number.

12101000000221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12101000000221 is a deficient number, since it is larger than the sum of its proper divisors (1324076209379).

12101000000221 is a wasteful number, since it uses less digits than its factorization.

12101000000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330620.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12101000000221 its reverse (12200000010121), we get a palindrome (24301000010342).

The spelling of 12101000000221 in words is "twelve trillion, one hundred one billion, two hundred twenty-one", and thus it is an aban number.