1115220012 has 24 divisors (see below), whose sum is σ = 2602849200. Its totient is φ = 371644416.

The previous prime is 1115219983. The next prime is 1115220061. The reversal of 1115220012 is 2100225111.

It is a junction number, because it is equal to n+sod(n) for n = 1115219973 and 1115220000.

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 7 ways as a sum of consecutive naturals, for example, 49164 + ... + 68172.

It is an arithmetic number, because the mean of its divisors is an integer number (108452050).

Almost surely, 2^1115220012 is an apocalyptic number.

1115220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1115220012 is an abundant number, since it is smaller than the sum of its proper divisors (1487629188).

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

1115220012 is a wasteful number, since it uses less digits than its factorization.

1115220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23905 (or 23903 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 1115220012 is about 33394.9099714313. The cubic root of 1115220012 is about 1037.0193291288.

Adding to 1115220012 its reverse (2100225111), we get a palindrome (3215445123).

The spelling of 1115220012 in words is "one billion, one hundred fifteen million, two hundred twenty thousand, twelve".