100020020211021 has 4 divisors (see below), whose sum is σ = 133360026948032. Its totient is φ = 66680013474012.

The previous prime is 100020020210987. The next prime is 100020020211029. The reversal of 100020020211021 is 120112020020001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 100020020211021 - 2¹³ = 100020020202829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100020020210988 and 100020020211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100020020211029) 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 3 ways as a sum of consecutive naturals, for example, 16670003368501 + ... + 16670003368506.

It is an arithmetic number, because the mean of its divisors is an integer number (33340006737008).

Almost surely, 2^{100020020211021} is an apocalyptic number.

It is an amenable number.

100020020211021 is a deficient number, since it is larger than the sum of its proper divisors (33340006737011).

100020020211021 is an equidigital number, since it uses as much as digits as its factorization.

100020020211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33340006737010.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100020020211021 its reverse (120112020020001), we get a palindrome (220132040231022).

The spelling of 100020020211021 in words is "one hundred trillion, twenty billion, twenty million, two hundred eleven thousand, twenty-one".