20020101101021 has 8 divisors (see below), whose sum is σ = 22887201390720. Its totient is φ = 17154772273008.

The previous prime is 20020101101009. The next prime is 20020101101023. The reversal of 20020101101021 is 12010110102002.

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 20020101101021 - 2³⁰ = 20019027359197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020101100993 and 20020101101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020101101023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442841201 + ... + 442886406.

It is an arithmetic number, because the mean of its divisors is an integer number (2860900173840).

Almost surely, 2^{20020101101021} is an apocalyptic number.

It is an amenable number.

20020101101021 is a deficient number, since it is larger than the sum of its proper divisors (2867100289699).

20020101101021 is an equidigital number, since it uses as much as digits as its factorization.

20020101101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885730843.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20020101101021 its reverse (12010110102002), we get a palindrome (32030211203023).

The spelling of 20020101101021 in words is "twenty trillion, twenty billion, one hundred one million, one hundred one thousand, twenty-one".