21223224002 has 8 divisors (see below), whose sum is σ = 32218388496. Its totient is φ = 10483761172.

The previous prime is 21223223977. The next prime is 21223224037. The reversal of 21223224002 is 20042232212.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63925208 + ... + 63925539.

It is an arithmetic number, because the mean of its divisors is an integer number (4027298562).

Almost surely, 2^21223224002 is an apocalyptic number.

21223224002 is a deficient number, since it is larger than the sum of its proper divisors (10995164494).

21223224002 is a wasteful number, since it uses less digits than its factorization.

21223224002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127850832.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 21223224002 its reverse (20042232212), we get a palindrome (41265456214).

The spelling of 21223224002 in words is "twenty-one billion, two hundred twenty-three million, two hundred twenty-four thousand, two".