1121220121204 has 12 divisors (see below), whose sum is σ = 1962394361284. Its totient is φ = 560536017984.

The previous prime is 1121220121163. The next prime is 1121220121211. The reversal of 1121220121204 is 4021210221211.

It can be written as a sum of positive squares in 2 ways, for example, as 953849129104 + 167370992100 = 976652^2 + 409110^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18476577 + ... + 18537160.

Almost surely, 2^{1121220121204} is an apocalyptic number.

It is an amenable number.

1121220121204 is a deficient number, since it is larger than the sum of its proper divisors (841174240080).

1121220121204 is a wasteful number, since it uses less digits than its factorization.

1121220121204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37021314 (or 37021312 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1121220121204 its reverse (4021210221211), we get a palindrome (5142430342415).

The spelling of 1121220121204 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, two hundred four".