1115012120 has 32 divisors (see below), whose sum is σ = 2521530000. Its totient is φ = 443737728.

The previous prime is 1115012117. The next prime is 1115012137. The reversal of 1115012120 is 212105111.

It is a junction number, because it is equal to n+sod(n) for n = 1115012095 and 1115012104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62870 + ... + 78629.

Almost surely, 2^1115012120 is an apocalyptic number.

1115012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115012120 is an abundant number, since it is smaller than the sum of its proper divisors (1406517880).

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

1115012120 is a wasteful number, since it uses less digits than its factorization.

1115012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141707 (or 141703 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 14.

The square root of 1115012120 is about 33391.7971963175. The cubic root of 1115012120 is about 1036.9548870105.

Adding to 1115012120 its reverse (212105111), we get a palindrome (1327117231).

The spelling of 1115012120 in words is "one billion, one hundred fifteen million, twelve thousand, one hundred twenty".