21323030201 has 16 divisors (see below), whose sum is σ = 23625820800. Its totient is φ = 19082870400.

The previous prime is 21323030191. The next prime is 21323030207. The reversal of 21323030201 is 10203032312.

It is not a de Polignac number, because 21323030201 - 2⁶ = 21323030137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21323030201.

It is not an unprimeable number, because it can be changed into a prime (21323030207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176636 + ... + 271746.

It is an arithmetic number, because the mean of its divisors is an integer number (1476613800).

Almost surely, 2^21323030201 is an apocalyptic number.

It is an amenable number.

21323030201 is a deficient number, since it is larger than the sum of its proper divisors (2302790599).

21323030201 is a wasteful number, since it uses less digits than its factorization.

21323030201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95440.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21323030201 its reverse (10203032312), we get a palindrome (31526062513).

The spelling of 21323030201 in words is "twenty-one billion, three hundred twenty-three million, thirty thousand, two hundred one".