1012111443 has 20 divisors (see below), whose sum is σ = 1727909040. Its totient is φ = 578349072.

The previous prime is 1012111421. The next prime is 1012111459. The reversal of 1012111443 is 3441112101.

1012111443 is a `hidden beast` number, since 10 + 1 + 211 + 1 + 443 = 666.

1012111443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1012111443 - 2⁵ = 1012111411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1012111043) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 891948 + ... + 893081.

It is an arithmetic number, because the mean of its divisors is an integer number (86395452).

Almost surely, 2^1012111443 is an apocalyptic number.

1012111443 is a deficient number, since it is larger than the sum of its proper divisors (715797597).

1012111443 is an equidigital number, since it uses as much as digits as its factorization.

1012111443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785048 (or 1785039 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1012111443 is about 31813.6989832996. The cubic root of 1012111443 is about 1004.0209578939.

Adding to 1012111443 its reverse (3441112101), we get a palindrome (4453223544).

The spelling of 1012111443 in words is "one billion, twelve million, one hundred eleven thousand, four hundred forty-three".