100120021100221 has 16 divisors (see below), whose sum is σ = 100659826612800. Its totient is φ = 99581677665408.

The previous prime is 100120021100219. The next prime is 100120021100227. The reversal of 100120021100221 is 122001120021001.

It is a cyclic number.

It is not a de Polignac number, because 100120021100221 - 2¹ = 100120021100219 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 (100120021100227) 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, 374652670 + ... + 374919808.

It is an arithmetic number, because the mean of its divisors is an integer number (6291239163300).

Almost surely, 2^{100120021100221} is an apocalyptic number.

It is an amenable number.

100120021100221 is a deficient number, since it is larger than the sum of its proper divisors (539805512579).

100120021100221 is a wasteful number, since it uses less digits than its factorization.

100120021100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269868.

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

Adding to 100120021100221 its reverse (122001120021001), we get a palindrome (222121141121222).

The spelling of 100120021100221 in words is "one hundred trillion, one hundred twenty billion, twenty-one million, one hundred thousand, two hundred twenty-one".