1105120215 has 24 divisors (see below), whose sum is σ = 1998828000. Its totient is φ = 563770944.

The previous prime is 1105120213. The next prime is 1105120229. The reversal of 1105120215 is 5120215011.

It is not a de Polignac number, because 1105120215 - 2¹ = 1105120213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105120213) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 532840 + ... + 534909.

It is an arithmetic number, because the mean of its divisors is an integer number (83284500).

Almost surely, 2^1105120215 is an apocalyptic number.

1105120215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1105120215 is a deficient number, since it is larger than the sum of its proper divisors (893707785).

1105120215 is a wasteful number, since it uses less digits than its factorization.

1105120215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067783 (or 1067780 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 1105120215 is about 33243.3484324308. The cubic root of 1105120215 is about 1033.8793022446.

Adding to 1105120215 its reverse (5120215011), we get a palindrome (6225335226).

The spelling of 1105120215 in words is "one billion, one hundred five million, one hundred twenty thousand, two hundred fifteen".