21032321211 has 48 divisors (see below), whose sum is σ = 33752030208. Its totient is φ = 12513009600.

The previous prime is 21032321201. The next prime is 21032321213. The reversal of 21032321211 is 11212323012.

It is not a de Polignac number, because 21032321211 - 2¹⁰ = 21032320187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21032321213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3300150 + ... + 3306516.

It is an arithmetic number, because the mean of its divisors is an integer number (703167296).

Almost surely, 2^21032321211 is an apocalyptic number.

21032321211 is a deficient number, since it is larger than the sum of its proper divisors (12719708997).

21032321211 is a wasteful number, since it uses less digits than its factorization.

21032321211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6992 (or 6989 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21032321211 its reverse (11212323012), we get a palindrome (32244644223).

It can be divided in two parts, 21032 and 321211, that added together give a palindrome (342243).

The spelling of 21032321211 in words is "twenty-one billion, thirty-two million, three hundred twenty-one thousand, two hundred eleven".