21332113210211 has 4 divisors (see below), whose sum is σ = 21624333939192. Its totient is φ = 21039892481232.

The previous prime is 21332113210207. The next prime is 21332113210217. The reversal of 21332113210211 is 11201231123312.

It is a happy number.

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 21332113210211 - 2² = 21332113210207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21332113210217) 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, 146110364381 + ... + 146110364526.

It is an arithmetic number, because the mean of its divisors is an integer number (5406083484798).

Almost surely, 2^{21332113210211} is an apocalyptic number.

21332113210211 is a deficient number, since it is larger than the sum of its proper divisors (292220728981).

21332113210211 is an equidigital number, since it uses as much as digits as its factorization.

21332113210211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292220728980.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 21332113210211 its reverse (11201231123312), we get a palindrome (32533344333523).

The spelling of 21332113210211 in words is "twenty-one trillion, three hundred thirty-two billion, one hundred thirteen million, two hundred ten thousand, two hundred eleven".