20001101200221 has 8 divisors (see below), whose sum is σ = 26807758677504. Its totient is φ = 13264255594880.

The previous prime is 20001101200219. The next prime is 20001101200319. The reversal of 20001101200221 is 12200210110002.

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 20001101200221 - 2¹ = 20001101200219 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20001101200197 and 20001101200206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001101207221) 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, 17452967316 + ... + 17452968461.

It is an arithmetic number, because the mean of its divisors is an integer number (3350969834688).

Almost surely, 2^{20001101200221} is an apocalyptic number.

It is an amenable number.

20001101200221 is a deficient number, since it is larger than the sum of its proper divisors (6806657477283).

20001101200221 is a wasteful number, since it uses less digits than its factorization.

20001101200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34905935971.

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

Adding to 20001101200221 its reverse (12200210110002), we get a palindrome (32201311310223).

The spelling of 20001101200221 in words is "twenty trillion, one billion, one hundred one million, two hundred thousand, two hundred twenty-one".