21325852311 has 4 divisors (see below), whose sum is σ = 28434469752. Its totient is φ = 14217234872.

The previous prime is 21325852309. The next prime is 21325852337. The reversal of 21325852311 is 11325852312.

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 21325852311 - 2¹ = 21325852309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21325852511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3554308716 + ... + 3554308721.

It is an arithmetic number, because the mean of its divisors is an integer number (7108617438).

Almost surely, 2^21325852311 is an apocalyptic number.

21325852311 is a deficient number, since it is larger than the sum of its proper divisors (7108617441).

21325852311 is an equidigital number, since it uses as much as digits as its factorization.

21325852311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7108617440.

The product of its digits is 14400, while the sum is 33.

Subtracting from 21325852311 its reverse (11325852312), we obtain a palindrome (9999999999).

The spelling of 21325852311 in words is "twenty-one billion, three hundred twenty-five million, eight hundred fifty-two thousand, three hundred eleven".