1112121864 has 48 divisors (see below), whose sum is σ = 3442283520. Its totient is φ = 317748960.

The previous prime is 1112121853. The next prime is 1112121887. The reversal of 1112121864 is 4681212111.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1102792 + ... + 1103799.

It is an arithmetic number, because the mean of its divisors is an integer number (71714240).

Almost surely, 2^1112121864 is an apocalyptic number.

1112121864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1112121864 is an abundant number, since it is smaller than the sum of its proper divisors (2330161656).

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

1112121864 is a wasteful number, since it uses less digits than its factorization.

1112121864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2206610 (or 2206603 counting only the distinct ones).

The product of its digits is 768, while the sum is 27.

The square root of 1112121864 is about 33348.4911802618. The cubic root of 1112121864 is about 1036.0581378901.

Adding to 1112121864 its reverse (4681212111), we get a palindrome (5793333975).

The spelling of 1112121864 in words is "one billion, one hundred twelve million, one hundred twenty-one thousand, eight hundred sixty-four".