1122242161 has 4 divisors (see below), whose sum is σ = 1138992112. Its totient is φ = 1105492212.

The previous prime is 1122242159. The next prime is 1122242167. The reversal of 1122242161 is 1612422211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1122242161 - 2¹ = 1122242159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122242167) 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, 8374875 + ... + 8375008.

It is an arithmetic number, because the mean of its divisors is an integer number (284748028).

Almost surely, 2^1122242161 is an apocalyptic number.

It is an amenable number.

1122242161 is a deficient number, since it is larger than the sum of its proper divisors (16749951).

1122242161 is an equidigital number, since it uses as much as digits as its factorization.

1122242161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16749950.

The product of its digits is 384, while the sum is 22.

The square root of 1122242161 is about 33499.8829997957. The cubic root of 1122242161 is about 1039.1913589002.

Adding to 1122242161 its reverse (1612422211), we get a palindrome (2734664372).

The spelling of 1122242161 in words is "one billion, one hundred twenty-two million, two hundred forty-two thousand, one hundred sixty-one".