100012 has 12 divisors (see below), whose sum is σ = 191016. Its totient is φ = 45440.

The previous prime is 100003. The next prime is 100019. The reversal of 100012 is 210001.

It is a Harshad number since it is a multiple of its sum of digits (4).

It is a junction number, because it is equal to n+sod(n) for n = 99974 and 100010.

It is not an unprimeable number, because it can be changed into a prime (100019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1093 + ... + 1180.

It is an arithmetic number, because the mean of its divisors is an integer number (15918).

2¹⁰⁰⁰¹² is an apocalyptic number.

It is an amenable number.

100012 is a deficient number, since it is larger than the sum of its proper divisors (91004).

100012 is a wasteful number, since it uses less digits than its factorization.

100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288 (or 2286 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 100012 is about 316.2467391136. The cubic root of 100012 is about 46.4177448974.

Adding to 100012 its reverse (210001), we get a palindrome (310013).

Multiplying 100012 by its reverse (210001), we get a palindrome (21002620012).

It can be divided in two parts, 10001 and 2, that multiplied together give a palindrome (20002).

The spelling of 100012 in words is "one hundred thousand, twelve", and thus it is an iban number.