1115012100 has 36 divisors (see below), whose sum is σ = 3226102544. Its totient is φ = 297336480.

The previous prime is 1115012089. The next prime is 1115012113. The reversal of 1115012100 is 12105111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1858054 + ... + 1858653.

Almost surely, 2^1115012100 is an apocalyptic number.

1115012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115012100 is an abundant number, since it is smaller than the sum of its proper divisors (2111090444).

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

1115012100 is a wasteful number, since it uses less digits than its factorization.

1115012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3716724 (or 3716717 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 12.

The square root of 1115012100 is about 33391.7968968428. The cubic root of 1115012100 is about 1036.9548808105.

Adding to 1115012100 its reverse (12105111), we get a palindrome (1127117211).

The spelling of 1115012100 in words is "one billion, one hundred fifteen million, twelve thousand, one hundred".