21113550111063 has 8 divisors (see below), whose sum is σ = 28151469702000. Its totient is φ = 14075665297088.

The previous prime is 21113550111029. The next prime is 21113550111067. The reversal of 21113550111063 is 36011105531112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21113550111063 - 2²² = 21113545916759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21113550111063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113550111067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7243038 + ... + 9730811.

It is an arithmetic number, because the mean of its divisors is an integer number (3518933712750).

Almost surely, 2^{21113550111063} is an apocalyptic number.

21113550111063 is a deficient number, since it is larger than the sum of its proper divisors (7037919590937).

21113550111063 is a wasteful number, since it uses less digits than its factorization.

21113550111063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17388481.

The product of its (nonzero) digits is 2700, while the sum is 30.

Adding to 21113550111063 its reverse (36011105531112), we get a palindrome (57124655642175).

The spelling of 21113550111063 in words is "twenty-one trillion, one hundred thirteen billion, five hundred fifty million, one hundred eleven thousand, sixty-three".