21323001002 has 8 divisors (see below), whose sum is σ = 33016259712. Its totient is φ = 10317581100.

The previous prime is 21323000999. The next prime is 21323001017. The reversal of 21323001002 is 20010032312.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171959624 + ... + 171959747.

It is an arithmetic number, because the mean of its divisors is an integer number (4127032464).

Almost surely, 2^21323001002 is an apocalyptic number.

21323001002 is a deficient number, since it is larger than the sum of its proper divisors (11693258710).

21323001002 is a wasteful number, since it uses less digits than its factorization.

21323001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343919404.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21323001002 its reverse (20010032312), we get a palindrome (41333033314).

The spelling of 21323001002 in words is "twenty-one billion, three hundred twenty-three million, one thousand, two".