1122211211 has 24 divisors (see below), whose sum is σ = 1265181120. Its totient is φ = 986870000.

The previous prime is 1122211199. The next prime is 1122211219. The reversal of 1122211211 is 1121122211.

It is not a de Polignac number, because 1122211211 - 2³⁰ = 48469387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122211219) 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, 4470836 + ... + 4471086.

It is an arithmetic number, because the mean of its divisors is an integer number (52715880).

Almost surely, 2^1122211211 is an apocalyptic number.

1122211211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1122211211 is a deficient number, since it is larger than the sum of its proper divisors (142969909).

1122211211 is an equidigital number, since it uses as much as digits as its factorization.

1122211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 404 counting only the distinct ones).

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

The square root of 1122211211 is about 33499.4210546988. The cubic root of 1122211211 is about 1039.1818056239.

Adding to 1122211211 its reverse (1121122211), we get a palindrome (2243333422).

It can be divided in two parts, 11 and 22211211, that added together give a palindrome (22211222).

The spelling of 1122211211 in words is "one billion, one hundred twenty-two million, two hundred eleven thousand, two hundred eleven".