21320223113 has 16 divisors (see below), whose sum is σ = 24453187200. Its totient is φ = 18209184000.

The previous prime is 21320223097. The next prime is 21320223131. The reversal of 21320223113 is 31132202312.

It is not a de Polignac number, because 21320223113 - 2⁴ = 21320223097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21320223013) 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, 2404913 + ... + 2413761.

It is an arithmetic number, because the mean of its divisors is an integer number (1528324200).

Almost surely, 2^21320223113 is an apocalyptic number.

It is an amenable number.

21320223113 is a deficient number, since it is larger than the sum of its proper divisors (3132964087).

21320223113 is an equidigital number, since it uses as much as digits as its factorization.

21320223113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10048.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21320223113 its reverse (31132202312), we get a palindrome (52452425425).

The spelling of 21320223113 in words is "twenty-one billion, three hundred twenty million, two hundred twenty-three thousand, one hundred thirteen".