21332211132221 has 8 divisors (see below), whose sum is σ = 23296553121600. Its totient is φ = 19372044154240.

The previous prime is 21332211132217. The next prime is 21332211132233. The reversal of 21332211132221 is 12223111223312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21332211132221 - 2² = 21332211132217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332211132241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1043742161 + ... + 1043762598.

It is an arithmetic number, because the mean of its divisors is an integer number (2912069140200).

Almost surely, 2^{21332211132221} is an apocalyptic number.

It is an amenable number.

21332211132221 is a deficient number, since it is larger than the sum of its proper divisors (1964341989379).

21332211132221 is a wasteful number, since it uses less digits than its factorization.

21332211132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087505699.

The product of its digits is 1728, while the sum is 26.

Adding to 21332211132221 its reverse (12223111223312), we get a palindrome (33555322355533).

The spelling of 21332211132221 in words is "twenty-one trillion, three hundred thirty-two billion, two hundred eleven million, one hundred thirty-two thousand, two hundred twenty-one".