21234201043305 has 24 divisors (see below), whose sum is σ = 35856977726592. Its totient is φ = 10728859471776.

The previous prime is 21234201043277. The next prime is 21234201043333. The reversal of 21234201043305 is 50334010243212.

It is an interprime number because it is at equal distance from previous prime (21234201043277) and next prime (21234201043333).

It is not a de Polignac number, because 21234201043305 - 2⁷ = 21234201043177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1960677969 + ... + 1960688798.

It is an arithmetic number, because the mean of its divisors is an integer number (1494040738608).

Almost surely, 2^{21234201043305} is an apocalyptic number.

It is an amenable number.

21234201043305 is a deficient number, since it is larger than the sum of its proper divisors (14622776683287).

21234201043305 is a wasteful number, since it uses less digits than its factorization.

21234201043305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3921366813 (or 3921366794 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 21234201043305 its reverse (50334010243212), we get a palindrome (71568211286517).

The spelling of 21234201043305 in words is "twenty-one trillion, two hundred thirty-four billion, two hundred one million, forty-three thousand, three hundred five".