21110540111 has 8 divisors (see below), whose sum is σ = 21847920480. Its totient is φ = 20373788512.

The previous prime is 21110540093. The next prime is 21110540117. The reversal of 21110540111 is 11104501112.

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 21110540111 - 2¹⁴ = 21110523727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21110540111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110540117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88355 + ... + 223668.

It is an arithmetic number, because the mean of its divisors is an integer number (2730990060).

Almost surely, 2^21110540111 is an apocalyptic number.

21110540111 is a deficient number, since it is larger than the sum of its proper divisors (737380369).

21110540111 is a wasteful number, since it uses less digits than its factorization.

21110540111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314385.

The product of its (nonzero) digits is 40, while the sum is 17.

The spelling of 21110540111 in words is "twenty-one billion, one hundred ten million, five hundred forty thousand, one hundred eleven".