1111112211 has 16 divisors (see below), whose sum is σ = 1632169728. Its totient is φ = 666732000.

The previous prime is 1111112203. The next prime is 1111112227. The reversal of 1111112211 is 1122111111.

It is not a de Polignac number, because 1111112211 - 2³ = 1111112203 is a prime.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1111112201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163351 + ... + 170016.

It is an arithmetic number, because the mean of its divisors is an integer number (102010608).

Almost surely, 2^1111112211 is an apocalyptic number.

1111112211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1111112211 is a deficient number, since it is larger than the sum of its proper divisors (521057517).

1111112211 is a wasteful number, since it uses less digits than its factorization.

1111112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333482.

The product of its digits is 4, while the sum is 12.

The square root of 1111112211 is about 33333.3498316626. The cubic root of 1111112211 is about 1035.7445104122.

Adding to 1111112211 its reverse (1122111111), we get a palindrome (2233223322).

It can be divided in two parts, 1111 and 112211, that multiplied together give a palindrome (124666421).

The spelling of 1111112211 in words is "one billion, one hundred eleven million, one hundred twelve thousand, two hundred eleven".