21320132433013 has 16 divisors (see below), whose sum is σ = 21560873241600. Its totient is φ = 21080221747200.

The previous prime is 21320132432923. The next prime is 21320132433049. The reversal of 21320132433013 is 31033423102312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21320132433013 is a prime.

It is a super-2 number, since 2×21320132433013² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320132433073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 721015093 + ... + 721044661.

It is an arithmetic number, because the mean of its divisors is an integer number (1347554577600).

Almost surely, 2^{21320132433013} is an apocalyptic number.

It is an amenable number.

21320132433013 is a deficient number, since it is larger than the sum of its proper divisors (240740808587).

21320132433013 is a wasteful number, since it uses less digits than its factorization.

21320132433013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43332.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 21320132433013 its reverse (31033423102312), we get a palindrome (52353555535325).

The spelling of 21320132433013 in words is "twenty-one trillion, three hundred twenty billion, one hundred thirty-two million, four hundred thirty-three thousand, thirteen".