21230133201 has 12 divisors (see below), whose sum is σ = 30681637428. Its totient is φ = 14146088544.

The previous prime is 21230133191. The next prime is 21230133229. The reversal of 21230133201 is 10233103212.

It can be written as a sum of positive squares in 2 ways, for example, as 18454950801 + 2775182400 = 135849^2 + 52680^2 .

It is not a de Polignac number, because 21230133201 - 2¹³ = 21230125009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21230133251) 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, 592770 + ... + 627563.

It is an arithmetic number, because the mean of its divisors is an integer number (2556803119).

Almost surely, 2^21230133201 is an apocalyptic number.

It is an amenable number.

21230133201 is a deficient number, since it is larger than the sum of its proper divisors (9451504227).

21230133201 is a wasteful number, since it uses less digits than its factorization.

21230133201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222272 (or 1222269 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21230133201 its reverse (10233103212), we get a palindrome (31463236413).

The spelling of 21230133201 in words is "twenty-one billion, two hundred thirty million, one hundred thirty-three thousand, two hundred one".