21332120331 has 8 divisors (see below), whose sum is σ = 28451815120. Its totient is φ = 14216919552.

The previous prime is 21332120321. The next prime is 21332120333. The reversal of 21332120331 is 13302123312.

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

It is not a de Polignac number, because 21332120331 - 2²⁷ = 21197902603 is a prime.

It is a super-3 number, since 3×21332120331³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21332120298 and 21332120307.

It is not an unprimeable number, because it can be changed into a prime (21332120333) 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, 1112410 + ... + 1131423.

It is an arithmetic number, because the mean of its divisors is an integer number (3556476890).

Almost surely, 2^21332120331 is an apocalyptic number.

21332120331 is a deficient number, since it is larger than the sum of its proper divisors (7119694789).

21332120331 is a wasteful number, since it uses less digits than its factorization.

21332120331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247005.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21332120331 its reverse (13302123312), we get a palindrome (34634243643).

The spelling of 21332120331 in words is "twenty-one billion, three hundred thirty-two million, one hundred twenty thousand, three hundred thirty-one".