21132332201 has 4 divisors (see below), whose sum is σ = 21132674004. Its totient is φ = 21131990400.

The previous prime is 21132332189. The next prime is 21132332231. The reversal of 21132332201 is 10223323112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4304016025 + 16828316176 = 65605^2 + 129724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21132332201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21132332231) 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 3 ways as a sum of consecutive naturals, for example, 49340 + ... + 211421.

It is an arithmetic number, because the mean of its divisors is an integer number (5283168501).

Almost surely, 2^21132332201 is an apocalyptic number.

It is an amenable number.

21132332201 is a deficient number, since it is larger than the sum of its proper divisors (341803).

21132332201 is an equidigital number, since it uses as much as digits as its factorization.

21132332201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341802.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21132332201 its reverse (10223323112), we get a palindrome (31355655313).

The spelling of 21132332201 in words is "twenty-one billion, one hundred thirty-two million, three hundred thirty-two thousand, two hundred one".