20020023103221 has 12 divisors (see below), whose sum is σ = 29914977051180. Its totient is φ = 12886451652480.

The previous prime is 20020023103189. The next prime is 20020023103247. The reversal of 20020023103221 is 12230132002002.

20020023103221 is a `hidden beast` number, since 200 + 200 + 231 + 0 + 32 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8853665711121 + 11166357392100 = 2975511^2 + 3341610^2 .

It is not a de Polignac number, because 20020023103221 - 2⁵ = 20020023103189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20020023103194 and 20020023103203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020023102221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38352534420 + ... + 38352534941.

It is an arithmetic number, because the mean of its divisors is an integer number (2492914754265).

Almost surely, 2^{20020023103221} is an apocalyptic number.

It is an amenable number.

20020023103221 is a deficient number, since it is larger than the sum of its proper divisors (9894953947959).

20020023103221 is a wasteful number, since it uses less digits than its factorization.

20020023103221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76705069396 (or 76705069393 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20020023103221 its reverse (12230132002002), we get a palindrome (32250155105223).

The spelling of 20020023103221 in words is "twenty trillion, twenty billion, twenty-three million, one hundred three thousand, two hundred twenty-one".