1122120218 has 4 divisors (see below), whose sum is σ = 1683180330. Its totient is φ = 561060108.

The previous prime is 1122120211. The next prime is 1122120227. The reversal of 1122120218 is 8120212211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 860424889 + 261695329 = 29333^2 + 16177^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1122120218.

It is not an unprimeable number, because it can be changed into a prime (1122120211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280530053 + ... + 280530056.

Almost surely, 2^1122120218 is an apocalyptic number.

1122120218 is a deficient number, since it is larger than the sum of its proper divisors (561060112).

1122120218 is an equidigital number, since it uses as much as digits as its factorization.

1122120218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561060111.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 1122120218 is about 33498.0628992185. The cubic root of 1122120218 is about 1039.1537179743.

Adding to 1122120218 its reverse (8120212211), we get a palindrome (9242332429).

The spelling of 1122120218 in words is "one billion, one hundred twenty-two million, one hundred twenty thousand, two hundred eighteen".