111100001021111 has 16 divisors (see below), whose sum is σ = 116259920378880. Its totient is φ = 106038712301760.

The previous prime is 111100001021077. The next prime is 111100001021197. The reversal of 111100001021111 is 111120100001111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111100001021111 - 2¹⁰ = 111100001020087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111100001021092 and 111100001021101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111100001521111) 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, 51764396 + ... + 53867918.

It is an arithmetic number, because the mean of its divisors is an integer number (7266245023680).

Almost surely, 2^{111100001021111} is an apocalyptic number.

111100001021111 is a deficient number, since it is larger than the sum of its proper divisors (5159919357769).

111100001021111 is a wasteful number, since it uses less digits than its factorization.

111100001021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126966.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 111100001021111 its reverse (111120100001111), we get a palindrome (222220101022222).

The spelling of 111100001021111 in words is "one hundred eleven trillion, one hundred billion, one million, twenty-one thousand, one hundred eleven".