1104120121 has 4 divisors (see below), whose sum is σ = 1189052452. Its totient is φ = 1019187792.

The previous prime is 1104120089. The next prime is 1104120137. The reversal of 1104120121 is 1210214011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 109411600 + 994708521 = 10460^2 + 31539^2 .

It is a cyclic number.

It is not a de Polignac number, because 1104120121 - 2⁵ = 1104120089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 84932317 = 1104120121 / (1 + 1 + 0 + 4 + 1 + 2 + 0 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1104120181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42466146 + ... + 42466171.

It is an arithmetic number, because the mean of its divisors is an integer number (297263113).

Almost surely, 2^1104120121 is an apocalyptic number.

It is an amenable number.

1104120121 is a deficient number, since it is larger than the sum of its proper divisors (84932331).

1104120121 is an equidigital number, since it uses as much as digits as its factorization.

1104120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84932330.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1104120121 is about 33228.3030111380. The cubic root of 1104120121 is about 1033.5673336058.

Adding to 1104120121 its reverse (1210214011), we get a palindrome (2314334132).

The spelling of 1104120121 in words is "one billion, one hundred four million, one hundred twenty thousand, one hundred twenty-one".