100003212 has 36 divisors (see below), whose sum is σ = 253199856. Its totient is φ = 33279840.

The previous prime is 100003181. The next prime is 100003219. The reversal of 100003212 is 212300001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 100003194 and 100003203.

It is not an unprimeable number, because it can be changed into a prime (100003219) 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 11 ways as a sum of consecutive naturals, for example, 24262 + ... + 28082.

Almost surely, 2^100003212 is an apocalyptic number.

100003212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100003212 is an abundant number, since it is smaller than the sum of its proper divisors (153196644).

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

100003212 is a wasteful number, since it uses less digits than its factorization.

100003212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4558 (or 4553 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 100003212 is about 10000.1605987104. The cubic root of 100003212 is about 464.1638529025.

Adding to 100003212 its reverse (212300001), we get a palindrome (312303213).

The spelling of 100003212 in words is "one hundred million, three thousand, two hundred twelve".