21110405010013 has 16 divisors (see below), whose sum is σ = 23186065132800. Its totient is φ = 19060855531200.

The previous prime is 21110405010011. The next prime is 21110405010029. The reversal of 21110405010013 is 31001050401112.

It is a cyclic number.

It is not a de Polignac number, because 21110405010013 - 2¹ = 21110405010011 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 (21110405010011) 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, 18941023 + ... + 20024563.

It is an arithmetic number, because the mean of its divisors is an integer number (1449129070800).

Almost surely, 2^{21110405010013} is an apocalyptic number.

It is an amenable number.

21110405010013 is a deficient number, since it is larger than the sum of its proper divisors (2075660122787).

21110405010013 is a wasteful number, since it uses less digits than its factorization.

21110405010013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095588.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 21110405010013 its reverse (31001050401112), we get a palindrome (52111455411125).

The spelling of 21110405010013 in words is "twenty-one trillion, one hundred ten billion, four hundred five million, ten thousand, thirteen".