21434310002 has 24 divisors (see below), whose sum is σ = 38690367660. Its totient is φ = 8869368480.

The previous prime is 21434309987. The next prime is 21434310011. The reversal of 21434310002 is 20001343412.

It can be written as a sum of positive squares in 2 ways, for example, as 19010618641 + 2423691361 = 137879^2 + 49231^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3768149 + ... + 3773832.

Almost surely, 2^21434310002 is an apocalyptic number.

21434310002 is a deficient number, since it is larger than the sum of its proper divisors (17256057658).

21434310002 is a wasteful number, since it uses less digits than its factorization.

21434310002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7542026 (or 7542019 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21434310002 its reverse (20001343412), we get a palindrome (41435653414).

The spelling of 21434310002 in words is "twenty-one billion, four hundred thirty-four million, three hundred ten thousand, two".