100671221 has 8 divisors (see below), whose sum is σ = 117224064. Its totient is φ = 84661200.

The previous prime is 100671217. The next prime is 100671223. The reversal of 100671221 is 122176001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100671221 - 2² = 100671217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100671193 and 100671202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100671223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135305 + ... + 136046.

It is an arithmetic number, because the mean of its divisors is an integer number (14653008).

Almost surely, 2^100671221 is an apocalyptic number.

It is an amenable number.

100671221 is a deficient number, since it is larger than the sum of its proper divisors (16552843).

100671221 is an equidigital number, since it uses as much as digits as its factorization.

100671221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271411.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 100671221 is about 10033.5049210134. The cubic root of 100671221 is about 465.1950790530.

It can be divided in two parts, 1006 and 71221, that added together give a palindrome (72227).

The spelling of 100671221 in words is "one hundred million, six hundred seventy-one thousand, two hundred twenty-one".