1111881111 has 16 divisors (see below), whose sum is σ = 1687599360. Its totient is φ = 644568320.

The previous prime is 1111881079. The next prime is 1111881131.

1111881111 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1111881111 - 2⁵ = 1111881079 is a prime.

1111881111 is a strobogrammatic number because it is the same when read upside-down.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111881131) 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, 731706 + ... + 733223.

It is an arithmetic number, because the mean of its divisors is an integer number (105474960).

Almost surely, 2^1111881111 is an apocalyptic number.

1111881111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1111881111 is a deficient number, since it is larger than the sum of its proper divisors (575718249).

1111881111 is a wasteful number, since it uses less digits than its factorization.

1111881111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464966.

The product of its digits is 64, while the sum is 24.

The square root of 1111881111 is about 33344.8813313228. The cubic root of 1111881111 is about 1035.9833702727.

It can be divided in two parts, 11118 and 81111, that added together give a palindrome (92229).

The spelling of 1111881111 in words is "one billion, one hundred eleven million, eight hundred eighty-one thousand, one hundred eleven".