1105515012 has 96 divisors (see below), whose sum is σ = 3040063488. Its totient is φ = 306134784.

The previous prime is 1105514983. The next prime is 1105515023. The reversal of 1105515012 is 2105155011.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1105515012.

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 31 ways as a sum of consecutive naturals, for example, 421128 + ... + 423744.

It is an arithmetic number, because the mean of its divisors is an integer number (31667328).

Almost surely, 2^1105515012 is an apocalyptic number.

1105515012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1105515012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1520031744).

1105515012 is an abundant number, since it is smaller than the sum of its proper divisors (1934548476).

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

1105515012 is a wasteful number, since it uses less digits than its factorization.

1105515012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785 (or 2783 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 1105515012 is about 33249.2858870683. The cubic root of 1105515012 is about 1034.0024031361.

The spelling of 1105515012 in words is "one billion, one hundred five million, five hundred fifteen thousand, twelve".