21202233201 has 12 divisors (see below), whose sum is σ = 30928671540. Its totient is φ = 13994872800.

The previous prime is 21202233193. The next prime is 21202233203. The reversal of 21202233201 is 10233220212.

21202233201 is a `hidden beast` number, since 2 + 120 + 223 + 320 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20121138801 + 1081094400 = 141849^2 + 32880^2 .

It is not a de Polignac number, because 21202233201 - 2³ = 21202233193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21202233203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11661486 + ... + 11663303.

It is an arithmetic number, because the mean of its divisors is an integer number (2577389295).

Almost surely, 2^21202233201 is an apocalyptic number.

It is an amenable number.

21202233201 is a deficient number, since it is larger than the sum of its proper divisors (9726438339).

21202233201 is a wasteful number, since it uses less digits than its factorization.

21202233201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23324896 (or 23324893 counting only the distinct ones).

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

Adding to 21202233201 its reverse (10233220212), we get a palindrome (31435453413).

The spelling of 21202233201 in words is "twenty-one billion, two hundred two million, two hundred thirty-three thousand, two hundred one".