2111157412 has 192 divisors, whose sum is σ = 5077811200. Its totient is φ = 744629760.

The previous prime is 2111157409. The next prime is 2111157463. The reversal of 2111157412 is 2147511112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9218914 + ... + 9219142.

Almost surely, 2^2111157412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111157412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2538905600).

2111157412 is an abundant number, since it is smaller than the sum of its proper divisors (2966653788).

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

2111157412 is a wasteful number, since it uses less digits than its factorization.

2111157412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 344 counting only the distinct ones).

The product of its digits is 560, while the sum is 25.

The square root of 2111157412 is about 45947.3330238002. Note that the first 3 decimals coincide. The cubic root of 2111157412 is about 1282.8430887267.

Adding to 2111157412 its reverse (2147511112), we get a palindrome (4258668524).

The spelling of 2111157412 in words is "two billion, one hundred eleven million, one hundred fifty-seven thousand, four hundred twelve".