21234130001 has 16 divisors (see below), whose sum is σ = 24354144000. Its totient is φ = 18135871488.

The previous prime is 21234129997. The next prime is 21234130009. The reversal of 21234130001 is 10003143212.

It is not a de Polignac number, because 21234130001 - 2² = 21234129997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21234130009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2582585 + ... + 2590793.

It is an arithmetic number, because the mean of its divisors is an integer number (1522134000).

Almost surely, 2^21234130001 is an apocalyptic number.

It is an amenable number.

21234130001 is a deficient number, since it is larger than the sum of its proper divisors (3120013999).

21234130001 is an equidigital number, since it uses as much as digits as its factorization.

21234130001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9488.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21234130001 its reverse (10003143212), we get a palindrome (31237273213).

The spelling of 21234130001 in words is "twenty-one billion, two hundred thirty-four million, one hundred thirty thousand, one".