1121043105 has 64 divisors (see below), whose sum is σ = 2452907520. Its totient is φ = 473050368.

The previous prime is 1121043103. The next prime is 1121043109. The reversal of 1121043105 is 5013401211.

It is not a de Polignac number, because 1121043105 - 2¹ = 1121043103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121043103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33342 + ... + 57911.

It is an arithmetic number, because the mean of its divisors is an integer number (38326680).

Almost surely, 2^1121043105 is an apocalyptic number.

1121043105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121043105 is an abundant number, since it is smaller than the sum of its proper divisors (1331864415).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121043105 is a wasteful number, since it uses less digits than its factorization.

1121043105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91287 (or 91281 counting only the distinct ones).

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

The square root of 1121043105 is about 33481.9817961840. The cubic root of 1121043105 is about 1038.8211201289.

Adding to 1121043105 its reverse (5013401211), we get a palindrome (6134444316).

The spelling of 1121043105 in words is "one billion, one hundred twenty-one million, forty-three thousand, one hundred five".