100221010221021 has 16 divisors (see below), whose sum is σ = 141514604751744. Its totient is φ = 62872162348544.

The previous prime is 100221010221001. The next prime is 100221010221037. The reversal of 100221010221021 is 120122010122001.

It is a cyclic number.

It is not a de Polignac number, because 100221010221021 - 2¹⁸ = 100221009958877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221010221001) 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, 181108065 + ... + 181660598.

It is an arithmetic number, because the mean of its divisors is an integer number (8844662796984).

Almost surely, 2^{100221010221021} is an apocalyptic number.

It is an amenable number.

100221010221021 is a deficient number, since it is larger than the sum of its proper divisors (41293594530723).

100221010221021 is a wasteful number, since it uses less digits than its factorization.

100221010221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362774100.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100221010221021 its reverse (120122010122001), we get a palindrome (220343020343022).

The spelling of 100221010221021 in words is "one hundred trillion, two hundred twenty-one billion, ten million, two hundred twenty-one thousand, twenty-one".