20100002201021 has 8 divisors (see below), whose sum is σ = 20300139016320. Its totient is φ = 19900639610208.

The previous prime is 20100002201009. The next prime is 20100002201051. The reversal of 20100002201021 is 12010220000102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20100002201021 - 2¹⁰ = 20100002199997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20100002200993 and 20100002201011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100002201051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193503941 + ... + 193607786.

It is an arithmetic number, because the mean of its divisors is an integer number (2537517377040).

Almost surely, 2^{20100002201021} is an apocalyptic number.

It is an amenable number.

20100002201021 is a deficient number, since it is larger than the sum of its proper divisors (200136815299).

20100002201021 is a wasteful number, since it uses less digits than its factorization.

20100002201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387112243.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20100002201021 its reverse (12010220000102), we get a palindrome (32110222201123).

The spelling of 20100002201021 in words is "twenty trillion, one hundred billion, two million, two hundred one thousand, twenty-one".