1000000011111 has 4 divisors (see below), whose sum is σ = 1333333348152. Its totient is φ = 666666674072.

The previous prime is 1000000011103. The next prime is 1000000011113. The reversal of 1000000011111 is 1111100000001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1000000011111 - 2³ = 1000000011103 is a prime.

1000000011111 is a modest number, since divided by 11111 gives 100 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1000000011111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000000011113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166666668516 + ... + 166666668521.

It is an arithmetic number, because the mean of its divisors is an integer number (333333337038).

Almost surely, 2^{1000000011111} is an apocalyptic number.

1000000011111 is a deficient number, since it is larger than the sum of its proper divisors (333333337041).

1000000011111 is an equidigital number, since it uses as much as digits as its factorization.

1000000011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333333337040.

The product of its (nonzero) digits is 1, while the sum is 6.

Adding to 1000000011111 its reverse (1111100000001), we get a palindrome (2111100011112).

It can be divided in two parts, 100000001 and 1111, that multiplied together give a palindrome (111100001111).

The spelling of 1000000011111 in words is "one trillion, eleven thousand, one hundred eleven".