2111815112 has 32 divisors (see below), whose sum is σ = 4328579520. Its totient is φ = 957925440.

The previous prime is 2111815103. The next prime is 2111815169. The reversal of 2111815112 is 2115181112.

It is a happy 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, 18218 + ... + 67494.

It is an arithmetic number, because the mean of its divisors is an integer number (135268110).

Almost surely, 2^2111815112 is an apocalyptic number.

2111815112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2111815112 is an abundant number, since it is smaller than the sum of its proper divisors (2216764408).

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

2111815112 is a wasteful number, since it uses less digits than its factorization.

2111815112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49781 (or 49777 counting only the distinct ones).

The product of its digits is 160, while the sum is 23.

The square root of 2111815112 is about 45954.4895739252. The cubic root of 2111815112 is about 1282.9762918523.

Adding to 2111815112 its reverse (2115181112), we get a palindrome (4226996224).

The spelling of 2111815112 in words is "two billion, one hundred eleven million, eight hundred fifteen thousand, one hundred twelve".