1111001001111 has 12 divisors (see below), whose sum is σ = 1608215587992. Its totient is φ = 739081319856.

The previous prime is 1111001001109. The next prime is 1111001001151.

1111001001111 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1111001001111 - 2¹ = 1111001001109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

1111001001111 is a strobogrammatic number because it is the same when read upside-down.

It is a junction number, because it is equal to n+sod(n) for n = 1111001001093 and 1111001001102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111001001151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132163416 + ... + 132171821.

It is an arithmetic number, because the mean of its divisors is an integer number (134017965666).

Almost surely, 2^{1111001001111} is an apocalyptic number.

1111001001111 is a deficient number, since it is larger than the sum of its proper divisors (497214586881).

1111001001111 is a wasteful number, since it uses less digits than its factorization.

1111001001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264335710 (or 264335707 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

The spelling of 1111001001111 in words is "one trillion, one hundred eleven billion, one million, one thousand, one hundred eleven".