1105120051 has 4 divisors (see below), whose sum is σ = 1262994352. Its totient is φ = 947245752.

The previous prime is 1105120007. The next prime is 1105120117. The reversal of 1105120051 is 1500215011.

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

It is a cyclic number.

It is not a de Polignac number, because 1105120051 - 2¹³ = 1105111859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105120001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78937140 + ... + 78937153.

It is an arithmetic number, because the mean of its divisors is an integer number (315748588).

Almost surely, 2^1105120051 is an apocalyptic number.

1105120051 is a deficient number, since it is larger than the sum of its proper divisors (157874301).

1105120051 is an equidigital number, since it uses as much as digits as its factorization.

1105120051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157874300.

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 1105120051 is about 33243.3459657719. The cubic root of 1105120051 is about 1033.8792511020.

Adding to 1105120051 its reverse (1500215011), we get a palindrome (2605335062).

The spelling of 1105120051 in words is "one billion, one hundred five million, one hundred twenty thousand, fifty-one".