1112212211 has 4 divisors (see below), whose sum is σ = 1213322424. Its totient is φ = 1011102000.

The previous prime is 1112212181. The next prime is 1112212223. The reversal of 1112212211 is 1122122111.

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 1112212211 - 2³⁰ = 38470387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112214211) 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 3 ways as a sum of consecutive naturals, for example, 50555090 + ... + 50555111.

It is an arithmetic number, because the mean of its divisors is an integer number (303330606).

Almost surely, 2^1112212211 is an apocalyptic number.

1112212211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1112212211 is a deficient number, since it is larger than the sum of its proper divisors (101110213).

1112212211 is a wasteful number, since it uses less digits than its factorization.

1112212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101110212.

The product of its digits is 16, while the sum is 14.

The square root of 1112212211 is about 33349.8457417722. The cubic root of 1112212211 is about 1036.0861930320.

Adding to 1112212211 its reverse (1122122111), we get a palindrome (2234334322).

The spelling of 1112212211 in words is "one billion, one hundred twelve million, two hundred twelve thousand, two hundred eleven".