21423002301244 has 24 divisors (see below), whose sum is σ = 37834953433200. Its totient is φ = 10613019513600.

The previous prime is 21423002301199. The next prime is 21423002301251. The reversal of 21423002301244 is 44210320032412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22733847 + ... + 23657425.

It is an arithmetic number, because the mean of its divisors is an integer number (1576456393050).

Almost surely, 2^{21423002301244} is an apocalyptic number.

It is an amenable number.

21423002301244 is a deficient number, since it is larger than the sum of its proper divisors (16411951131956).

21423002301244 is a wasteful number, since it uses less digits than its factorization.

21423002301244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976893 (or 976891 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21423002301244 its reverse (44210320032412), we get a palindrome (65633322333656).

The spelling of 21423002301244 in words is "twenty-one trillion, four hundred twenty-three billion, two million, three hundred one thousand, two hundred forty-four".