21032210011 has 4 divisors (see below), whose sum is σ = 21037249432. Its totient is φ = 21027170592.

The previous prime is 21032209987. The next prime is 21032210027. The reversal of 21032210011 is 11001223012.

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

It is a cyclic number.

It is not a de Polignac number, because 21032210011 - 2¹⁹ = 21031685723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21032209973 and 21032210000.

It is not an unprimeable number, because it can be changed into a prime (21032210071) 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, 2513445 + ... + 2521798.

It is an arithmetic number, because the mean of its divisors is an integer number (5259312358).

Almost surely, 2^21032210011 is an apocalyptic number.

21032210011 is a deficient number, since it is larger than the sum of its proper divisors (5039421).

21032210011 is an equidigital number, since it uses as much as digits as its factorization.

21032210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5039420.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21032210011 its reverse (11001223012), we get a palindrome (32033433023).

The spelling of 21032210011 in words is "twenty-one billion, thirty-two million, two hundred ten thousand, eleven".