1000012112 has 40 divisors (see below), whose sum is σ = 2122176672. Its totient is φ = 452720000.

The previous prime is 1000012037. The next prime is 1000012121. The reversal of 1000012112 is 2112100001.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1000012112.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 32858 + ... + 55494.

Almost surely, 2^1000012112 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 1000012112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1061088336).

1000012112 is an abundant number, since it is smaller than the sum of its proper divisors (1122164560).

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

1000012112 is a wasteful number, since it uses less digits than its factorization.

1000012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22907 (or 22901 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1000012112 is about 31622.9681086390. The cubic root of 1000012112 is about 1000.0040373170.

Adding to 1000012112 its reverse (2112100001), we get a palindrome (3112112113).

It can be divided in two parts, 100001 and 2112, that multiplied together give a palindrome (211202112).

The spelling of 1000012112 in words is "one billion, twelve thousand, one hundred twelve".