100225212 has 12 divisors (see below), whose sum is σ = 233858856. Its totient is φ = 33408400.

The previous prime is 100225199. The next prime is 100225231. The reversal of 100225212 is 212522001.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 100225191 and 100225200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4176039 + ... + 4176062.

It is an arithmetic number, because the mean of its divisors is an integer number (19488238).

Almost surely, 2^100225212 is an apocalyptic number.

100225212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100225212 is an abundant number, since it is smaller than the sum of its proper divisors (133633644).

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

100225212 is a wasteful number, since it uses less digits than its factorization.

100225212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8352108 (or 8352106 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 100225212 is about 10011.2542670736. The cubic root of 100225212 is about 464.5070692746.

Adding to 100225212 its reverse (212522001), we get a palindrome (312747213).

It can be divided in two parts, 1002252 and 12, that multiplied together give a square (12027024 = 3468²).

The spelling of 100225212 in words is "one hundred million, two hundred twenty-five thousand, two hundred twelve".