202104112221 has 48 divisors (see below), whose sum is σ = 329150615040. Its totient is φ = 118388160000.

The previous prime is 202104112201. The next prime is 202104112267. The reversal of 202104112221 is 122211401202.

202104112221 is a `hidden beast` number, since 2 + 0 + 210 + 411 + 22 + 21 = 666.

It is not a de Polignac number, because 202104112221 - 2¹⁰ = 202104111197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202104112194 and 202104112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202104112201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2442121 + ... + 2523521.

It is an arithmetic number, because the mean of its divisors is an integer number (6857304480).

Almost surely, 2^202104112221 is an apocalyptic number.

It is an amenable number.

202104112221 is a deficient number, since it is larger than the sum of its proper divisors (127046502819).

202104112221 is a wasteful number, since it uses less digits than its factorization.

202104112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82258 (or 82255 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202104112221 its reverse (122211401202), we get a palindrome (324315513423).

The spelling of 202104112221 in words is "two hundred two billion, one hundred four million, one hundred twelve thousand, two hundred twenty-one".