20011000202101 has 8 divisors (see below), whose sum is σ = 20835123763608. Its totient is φ = 19202879040000.

The previous prime is 20011000202051. The next prime is 20011000202147. The reversal of 20011000202101 is 10120200011002.

It can be written as a sum of positive squares in 4 ways, for example, as 2200920602500 + 17810079599601 = 1483550^2 + 4220199^2 .

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 20011000202101 - 2¹⁵ = 20011000169333 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 (20011000202161) 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, 4000597300 + ... + 4000602301.

It is an arithmetic number, because the mean of its divisors is an integer number (2604390470451).

Almost surely, 2^{20011000202101} is an apocalyptic number.

It is an amenable number.

20011000202101 is a deficient number, since it is larger than the sum of its proper divisors (824123561507).

20011000202101 is an equidigital number, since it uses as much as digits as its factorization.

20011000202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8001199703.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20011000202101 its reverse (10120200011002), we get a palindrome (30131200213103).

The spelling of 20011000202101 in words is "twenty trillion, eleven billion, two hundred two thousand, one hundred one".