20211100303221 has 48 divisors (see below), whose sum is σ = 30288303302400. Its totient is φ = 12978047287296.

The previous prime is 20211100303211. The next prime is 20211100303223. The reversal of 20211100303221 is 12230300111202.

20211100303221 is a `hidden beast` number, since 2 + 0 + 211 + 100 + 30 + 322 + 1 = 666.

It is not a de Polignac number, because 20211100303221 - 2⁹ = 20211100302709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20211100303194 and 20211100303203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211100303223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24324981 + ... + 25142133.

It is an arithmetic number, because the mean of its divisors is an integer number (631006318800).

Almost surely, 2^{20211100303221} is an apocalyptic number.

It is an amenable number.

20211100303221 is a deficient number, since it is larger than the sum of its proper divisors (10077202999179).

20211100303221 is a wasteful number, since it uses less digits than its factorization.

20211100303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818090 (or 818087 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20211100303221 its reverse (12230300111202), we get a palindrome (32441400414423).

The spelling of 20211100303221 in words is "twenty trillion, two hundred eleven billion, one hundred million, three hundred three thousand, two hundred twenty-one".