21443213002 has 96 divisors (see below), whose sum is σ = 36260714880. Its totient is φ = 9494029440.

The previous prime is 21443212993. The next prime is 21443213003. The reversal of 21443213002 is 20031234412.

It is a super-3 number, since 3×21443213002³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (21443213003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 131553373 + ... + 131553535.

It is an arithmetic number, because the mean of its divisors is an integer number (377715780).

Almost surely, 2^21443213002 is an apocalyptic number.

21443213002 is a deficient number, since it is larger than the sum of its proper divisors (14817501878).

21443213002 is a wasteful number, since it uses less digits than its factorization.

21443213002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21443213002 its reverse (20031234412), we get a palindrome (41474447414).

The spelling of 21443213002 in words is "twenty-one billion, four hundred forty-three million, two hundred thirteen thousand, two".