1121020022018 has 16 divisors (see below), whose sum is σ = 1812366533880. Its totient is φ = 516968702976.

The previous prime is 1121020021987. The next prime is 1121020022047. The reversal of 1121020022018 is 8102200201211.

It can be written as a sum of positive squares in 4 ways, for example, as 599226165409 + 521793856609 = 774097^2 + 722353^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17682473 + ... + 17745756.

Almost surely, 2^{1121020022018} is an apocalyptic number.

1121020022018 is a deficient number, since it is larger than the sum of its proper divisors (691346511862).

1121020022018 is a wasteful number, since it uses less digits than its factorization.

1121020022018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35429461.

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

Adding to 1121020022018 its reverse (8102200201211), we get a palindrome (9223220223229).

The spelling of 1121020022018 in words is "one trillion, one hundred twenty-one billion, twenty million, twenty-two thousand, eighteen".