100221102020021 has 8 divisors (see below), whose sum is σ = 107486385484320. Its totient is φ = 93154867417872.

The previous prime is 100221102019981. The next prime is 100221102020023. The reversal of 100221102020021 is 120020201122001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100221102020021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100221102019978 and 100221102020005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221102020023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49762214495 + ... + 49762216508.

It is an arithmetic number, because the mean of its divisors is an integer number (13435798185540).

Almost surely, 2^{100221102020021} is an apocalyptic number.

It is an amenable number.

100221102020021 is a deficient number, since it is larger than the sum of its proper divisors (7265283464299).

100221102020021 is an equidigital number, since it uses as much as digits as its factorization.

100221102020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99524431075.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100221102020021 its reverse (120020201122001), we get a palindrome (220241303142022).

The spelling of 100221102020021 in words is "one hundred trillion, two hundred twenty-one billion, one hundred two million, twenty thousand, twenty-one".