21132446711 has 4 divisors (see below), whose sum is σ = 21861151800. Its totient is φ = 20403741624.

The previous prime is 21132446663. The next prime is 21132446719. The reversal of 21132446711 is 11764423112.

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 21132446711 - 2¹⁰ = 21132445687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132446719) 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 3 ways as a sum of consecutive naturals, for example, 364352501 + ... + 364352558.

It is an arithmetic number, because the mean of its divisors is an integer number (5465287950).

Almost surely, 2^21132446711 is an apocalyptic number.

21132446711 is a deficient number, since it is larger than the sum of its proper divisors (728705089).

21132446711 is an equidigital number, since it uses as much as digits as its factorization.

21132446711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728705088.

The product of its digits is 8064, while the sum is 32.

Adding to 21132446711 its reverse (11764423112), we get a palindrome (32896869823).

The spelling of 21132446711 in words is "twenty-one billion, one hundred thirty-two million, four hundred forty-six thousand, seven hundred eleven".