21344024402 has 8 divisors (see below), whose sum is σ = 32466966912. Its totient is φ = 10521702100.

The previous prime is 21344024393. The next prime is 21344024417. The reversal of 21344024402 is 20442044312.

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, 75154874 + ... + 75155157.

It is an arithmetic number, because the mean of its divisors is an integer number (4058370864).

Almost surely, 2^21344024402 is an apocalyptic number.

21344024402 is a deficient number, since it is larger than the sum of its proper divisors (11122942510).

21344024402 is a wasteful number, since it uses less digits than its factorization.

21344024402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150310104.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 21344024402 its reverse (20442044312), we get a palindrome (41786068714).

The spelling of 21344024402 in words is "twenty-one billion, three hundred forty-four million, twenty-four thousand, four hundred two".