21443211002 has 8 divisors (see below), whose sum is σ = 32188453812. Its totient is φ = 10713726400.

The previous prime is 21443210993. The next prime is 21443211019. The reversal of 21443211002 is 20011234412.

It can be written as a sum of positive squares in 2 ways, for example, as 20155764841 + 1287446161 = 141971^2 + 35881^2 .

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

It is a super-3 number, since 3×21443211002³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3936149 + ... + 3941592.

Almost surely, 2^21443211002 is an apocalyptic number.

21443211002 is a deficient number, since it is larger than the sum of its proper divisors (10745242810).

21443211002 is a wasteful number, since it uses less digits than its factorization.

21443211002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7879104.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21443211002 its reverse (20011234412), we get a palindrome (41454445414).

The spelling of 21443211002 in words is "twenty-one billion, four hundred forty-three million, two hundred eleven thousand, two".