20030332221 has 12 divisors (see below), whose sum is σ = 29219165820. Its totient is φ = 13221340800.

The previous prime is 20030332199. The next prime is 20030332237. The reversal of 20030332221 is 12223303002.

It is a happy number.

20030332221 is a `hidden beast` number, since 20 + 0 + 303 + 322 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19552428900 + 477903321 = 139830^2 + 21861^2 .

It is not a de Polignac number, because 20030332221 - 2¹⁹ = 20029807933 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20030332194 and 20030332203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030332921) 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, 11016876 + ... + 11018693.

It is an arithmetic number, because the mean of its divisors is an integer number (2434930485).

Almost surely, 2^20030332221 is an apocalyptic number.

It is an amenable number.

20030332221 is a deficient number, since it is larger than the sum of its proper divisors (9188833599).

20030332221 is a wasteful number, since it uses less digits than its factorization.

20030332221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22035676 (or 22035673 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20030332221 its reverse (12223303002), we get a palindrome (32253635223).

The spelling of 20030332221 in words is "twenty billion, thirty million, three hundred thirty-two thousand, two hundred twenty-one".