1012112444 has 72 divisors (see below), whose sum is σ = 2177199360. Its totient is φ = 409346784.

The previous prime is 1012112443. The next prime is 1012112461. The reversal of 1012112444 is 4442112101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012112443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1723919 + ... + 1724505.

It is an arithmetic number, because the mean of its divisors is an integer number (30238880).

Almost surely, 2^1012112444 is an apocalyptic number.

1012112444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012112444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088599680).

1012112444 is an abundant number, since it is smaller than the sum of its proper divisors (1165086916).

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

1012112444 is a wasteful number, since it uses less digits than its factorization.

1012112444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1012112444 is about 31813.7147155122. The cubic root of 1012112444 is about 1004.0212888932.

Adding to 1012112444 its reverse (4442112101), we get a palindrome (5454224545).

The spelling of 1012112444 in words is "one billion, twelve million, one hundred twelve thousand, four hundred forty-four".