1000011111111 has 24 divisors (see below), whose sum is σ = 1454002280640.
Its totient is φ = 662272168896.
The previous prime is 1000011111107. The next prime is 1000011111133. The reversal of 1000011111111 is 1111111100001.
Adding to 1000011111111 its reverse (1111111100001), we get a palindrome (2111122211112).
It can be divided in two parts, 100001 and 1111111, that multiplied together give a palindrome (111112211111).
It is not a de Polignac number, because 1000011111111 - 22 = 1000011111107 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (9).
1000011111111 is a modest number, since divided by 1111111 gives 100001 as remainder.
It is a junction number, because it is equal to n+sod(n) for n = 1000011111093 and 1000011111102.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1000011111101) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6098130 + ... + 6259968.
It is an arithmetic number, because the mean of its divisors is an integer number (60583428360).
Almost surely, 21000011111111 is an apocalyptic number.
1000011111111 is a deficient number, since it is larger than the sum of its proper divisors (453991169529).
1000011111111 is a wasteful number, since it uses less digits than its factorization.
1000011111111 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 166375 (or 166372 counting only the distinct ones).
The product of its (nonzero) digits is 1, while the sum is 9.
The spelling of 1000011111111 in words is "one trillion, eleven million, one hundred eleven thousand, one hundred eleven".