1122231211 has 4 divisors (see below), whose sum is σ = 1122348472. Its totient is φ = 1122113952.

The previous prime is 1122231199. The next prime is 1122231259. The reversal of 1122231211 is 1121322211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1121322211 = 2027 ⋅553193.

It is a cyclic number.

It is not a de Polignac number, because 1122231211 - 2⁵ = 1122231179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122231511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42861 + ... + 63886.

It is an arithmetic number, because the mean of its divisors is an integer number (280587118).

Almost surely, 2^1122231211 is an apocalyptic number.

1122231211 is a deficient number, since it is larger than the sum of its proper divisors (117261).

1122231211 is a wasteful number, since it uses less digits than its factorization.

1122231211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117260.

The product of its digits is 48, while the sum is 16.

The square root of 1122231211 is about 33499.7195659904. The cubic root of 1122231211 is about 1039.1879790051.

Adding to 1122231211 its reverse (1121322211), we get a palindrome (2243553422).

The spelling of 1122231211 in words is "one billion, one hundred twenty-two million, two hundred thirty-one thousand, two hundred eleven".