12101101010221 has 32 divisors (see below), whose sum is σ = 12308054556672. Its totient is φ = 11896539258240.

The previous prime is 12101101010149. The next prime is 12101101010321. The reversal of 12101101010221 is 12201010110121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12101101010221 - 2²¹ = 12101098913069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101101010321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9373431586 + ... + 9373432876.

It is an arithmetic number, because the mean of its divisors is an integer number (384626704896).

Almost surely, 2^{12101101010221} is an apocalyptic number.

It is an amenable number.

12101101010221 is a deficient number, since it is larger than the sum of its proper divisors (206953546451).

12101101010221 is a wasteful number, since it uses less digits than its factorization.

12101101010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12101101010221 its reverse (12201010110121), we get a palindrome (24302111120342).

The spelling of 12101101010221 in words is "twelve trillion, one hundred one billion, one hundred one million, ten thousand, two hundred twenty-one".