21234013113 has 8 divisors (see below), whose sum is σ = 28630130400. Its totient is φ = 13996952288.

The previous prime is 21234013091. The next prime is 21234013169. The reversal of 21234013113 is 31131043212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21234013113 - 2²² = 21229818809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21234013113.

It is not an unprimeable number, because it can be changed into a prime (21234013613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39763803 + ... + 39764336.

It is an arithmetic number, because the mean of its divisors is an integer number (3578766300).

Almost surely, 2^21234013113 is an apocalyptic number.

It is an amenable number.

21234013113 is a deficient number, since it is larger than the sum of its proper divisors (7396117287).

21234013113 is an equidigital number, since it uses as much as digits as its factorization.

21234013113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79528231.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21234013113 its reverse (31131043212), we get a palindrome (52365056325).

The spelling of 21234013113 in words is "twenty-one billion, two hundred thirty-four million, thirteen thousand, one hundred thirteen".