12101000221021 has 16 divisors (see below), whose sum is σ = 12825992874240. Its totient is φ = 11377473157120.

The previous prime is 12101000221007. The next prime is 12101000221027. The reversal of 12101000221021 is 12012200010121.

It is a cyclic number.

It is not a de Polignac number, because 12101000221021 - 2⁷ = 12101000220893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101000220992 and 12101000221010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101000221027) 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 15 ways as a sum of consecutive naturals, for example, 195250380 + ... + 195312346.

It is an arithmetic number, because the mean of its divisors is an integer number (801624554640).

Almost surely, 2^{12101000221021} is an apocalyptic number.

It is an amenable number.

12101000221021 is a deficient number, since it is larger than the sum of its proper divisors (724992653219).

12101000221021 is a wasteful number, since it uses less digits than its factorization.

12101000221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73604.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12101000221021 its reverse (12012200010121), we get a palindrome (24113200231142).

The spelling of 12101000221021 in words is "twelve trillion, one hundred one billion, two hundred twenty-one thousand, twenty-one".