10101221000221 has 16 divisors (see below), whose sum is σ = 10883260429888. Its totient is φ = 9319899916800.

The previous prime is 10101221000197. The next prime is 10101221000231. The reversal of 10101221000221 is 12200012210101.

It is a cyclic number.

It is not a de Polignac number, because 10101221000221 - 2²⁹ = 10100684129309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101221000231) 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, 537661390 + ... + 537680176.

It is an arithmetic number, because the mean of its divisors is an integer number (680203776868).

Almost surely, 2^{10101221000221} is an apocalyptic number.

It is an amenable number.

10101221000221 is a deficient number, since it is larger than the sum of its proper divisors (782039429667).

10101221000221 is a wasteful number, since it uses less digits than its factorization.

10101221000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35692.

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

Adding to 10101221000221 its reverse (12200012210101), we get a palindrome (22301233210322).

The spelling of 10101221000221 in words is "ten trillion, one hundred one billion, two hundred twenty-one million, two hundred twenty-one", and thus it is an aban number.