1121223105 has 48 divisors (see below), whose sum is σ = 2006484480. Its totient is φ = 578822400.

The previous prime is 1121223071. The next prime is 1121223139. The reversal of 1121223105 is 5013221211.

It is an interprime number because it is at equal distance from previous prime (1121223071) and next prime (1121223139).

It is not a de Polignac number, because 1121223105 - 2⁹ = 1121222593 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 239376 + ... + 244014.

It is an arithmetic number, because the mean of its divisors is an integer number (41801760).

Almost surely, 2^1121223105 is an apocalyptic number.

1121223105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121223105 is a deficient number, since it is larger than the sum of its proper divisors (885261375).

1121223105 is a wasteful number, since it uses less digits than its factorization.

1121223105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4822 (or 4819 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1121223105 is about 33484.6697012230. The cubic root of 1121223105 is about 1038.8767165027.

Adding to 1121223105 its reverse (5013221211), we get a palindrome (6134444316).

The spelling of 1121223105 in words is "one billion, one hundred twenty-one million, two hundred twenty-three thousand, one hundred five".