20302103101221 has 6 divisors (see below), whose sum is σ = 29325260035110. Its totient is φ = 13534735400808.

The previous prime is 20302103101127. The next prime is 20302103101261. The reversal of 20302103101221 is 12210130120302.

20302103101221 is a `hidden beast` number, since 20 + 3 + 0 + 210 + 310 + 122 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19961326196100 + 340776905121 = 4467810^2 + 583761^2 .

It is not a de Polignac number, because 20302103101221 - 2¹⁰ = 20302103100197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20302103101194 and 20302103101203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302103101261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1127894616726 + ... + 1127894616743.

It is an arithmetic number, because the mean of its divisors is an integer number (4887543339185).

Almost surely, 2^{20302103101221} is an apocalyptic number.

It is an amenable number.

20302103101221 is a deficient number, since it is larger than the sum of its proper divisors (9023156933889).

20302103101221 is a wasteful number, since it uses less digits than its factorization.

20302103101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255789233475 (or 2255789233472 counting only the distinct ones).

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

Adding to 20302103101221 its reverse (12210130120302), we get a palindrome (32512233221523).

The spelling of 20302103101221 in words is "twenty trillion, three hundred two billion, one hundred three million, one hundred one thousand, two hundred twenty-one".