20021100000101 has 8 divisors (see below), whose sum is σ = 20297831574720. Its totient is φ = 19744435180512.

The previous prime is 20021100000049. The next prime is 20021100000113. The reversal of 20021100000101 is 10100000112002.

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 20021100000101 - 2⁶ = 20021100000037 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 (20021100000131) 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, 16084625 + ... + 17284598.

It is an arithmetic number, because the mean of its divisors is an integer number (2537228946840).

Almost surely, 2^{20021100000101} is an apocalyptic number.

It is an amenable number.

20021100000101 is a deficient number, since it is larger than the sum of its proper divisors (276731574619).

20021100000101 is an equidigital number, since it uses as much as digits as its factorization.

20021100000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33377515.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20021100000101 its reverse (10100000112002), we get a palindrome (30121100112103).

The spelling of 20021100000101 in words is "twenty trillion, twenty-one billion, one hundred million, one hundred one", and thus it is an aban number.