21113305045005 has 16 divisors (see below), whose sum is σ = 33782014748160. Its totient is φ = 11260187131968.

The previous prime is 21113305044983. The next prime is 21113305045031. The reversal of 21113305045005 is 50054050331112.

It is not a de Polignac number, because 21113305045005 - 2⁵ = 21113305044973 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14417422 + ... + 15814191.

It is an arithmetic number, because the mean of its divisors is an integer number (2111375921760).

Almost surely, 2^{21113305045005} is an apocalyptic number.

It is an amenable number.

21113305045005 is a deficient number, since it is larger than the sum of its proper divisors (12668709703155).

21113305045005 is a wasteful number, since it uses less digits than its factorization.

21113305045005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30278180.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 21113305045005 its reverse (50054050331112), we get a palindrome (71167355376117).

The spelling of 21113305045005 in words is "twenty-one trillion, one hundred thirteen billion, three hundred five million, forty-five thousand, five".