21325111013 has 16 divisors (see below), whose sum is σ = 21898339200. Its totient is φ = 20760168000.

The previous prime is 21325111001. The next prime is 21325111037. The reversal of 21325111013 is 31011152312.

It is a cyclic number.

It is not a de Polignac number, because 21325111013 - 2¹⁴ = 21325094629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21325171013) 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, 4050803 + ... + 4056063.

It is an arithmetic number, because the mean of its divisors is an integer number (1368646200).

Almost surely, 2^21325111013 is an apocalyptic number.

It is an amenable number.

21325111013 is a deficient number, since it is larger than the sum of its proper divisors (573228187).

21325111013 is a wasteful number, since it uses less digits than its factorization.

21325111013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6028.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 21325111013 its reverse (31011152312), we get a palindrome (52336263325).

The spelling of 21325111013 in words is "twenty-one billion, three hundred twenty-five million, one hundred eleven thousand, thirteen".