1131222030218 has 24 divisors (see below), whose sum is σ = 1985276677572. Its totient is φ = 482007067584.

The previous prime is 1131222030217. The next prime is 1131222030283. The reversal of 1131222030218 is 8120302221311.

It can be written as a sum of positive squares in 2 ways, for example, as 1127765413369 + 3456616849 = 1061963^2 + 58793^2 .

It is not an unprimeable number, because it can be changed into a prime (1131222030217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33344555 + ... + 33378462.

Almost surely, 2^{1131222030218} is an apocalyptic number.

1131222030218 is a deficient number, since it is larger than the sum of its proper divisors (854054647354).

1131222030218 is a wasteful number, since it uses less digits than its factorization.

1131222030218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66723206 (or 66723199 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 1131222030218 its reverse (8120302221311), we get a palindrome (9251524251529).

The spelling of 1131222030218 in words is "one trillion, one hundred thirty-one billion, two hundred twenty-two million, thirty thousand, two hundred eighteen".