21032221333 has 8 divisors (see below), whose sum is σ = 21322887768. Its totient is φ = 20741624064.

The previous prime is 21032221321. The next prime is 21032221367. The reversal of 21032221333 is 33312223012.

It can be written as a sum of positive squares in 4 ways, for example, as 3327789969 + 17704431364 = 57687^2 + 133058^2 .

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 21032221333 - 2³³ = 12442286741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032221303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1022991 + ... + 1043347.

It is an arithmetic number, because the mean of its divisors is an integer number (2665360971).

Almost surely, 2^21032221333 is an apocalyptic number.

It is an amenable number.

21032221333 is a deficient number, since it is larger than the sum of its proper divisors (290666435).

21032221333 is a wasteful number, since it uses less digits than its factorization.

21032221333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34583.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21032221333 its reverse (33312223012), we get a palindrome (54344444345).

The spelling of 21032221333 in words is "twenty-one billion, thirty-two million, two hundred twenty-one thousand, three hundred thirty-three".