1012100444 has 12 divisors (see below), whose sum is σ = 1808860704. Its totient is φ = 495283104.

The previous prime is 1012100443. The next prime is 1012100449. The reversal of 1012100444 is 4440012101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012100443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2691569 + ... + 2691944.

It is an arithmetic number, because the mean of its divisors is an integer number (150738392).

Almost surely, 2^1012100444 is an apocalyptic number.

It is an amenable number.

1012100444 is a deficient number, since it is larger than the sum of its proper divisors (796760260).

1012100444 is a wasteful number, since it uses less digits than its factorization.

1012100444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5383564 (or 5383562 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1012100444 is about 31813.5261170465. The cubic root of 1012100444 is about 1004.0173208548.

Adding to 1012100444 its reverse (4440012101), we get a palindrome (5452112545).

The spelling of 1012100444 in words is "one billion, twelve million, one hundred thousand, four hundred forty-four".