100146221 has 4 divisors (see below), whose sum is σ = 114452832. Its totient is φ = 85839612.

The previous prime is 100146199. The next prime is 100146289. The reversal of 100146221 is 122641001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100146221 - 2⁶ = 100146157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100146221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100146821) 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, 7153295 + ... + 7153308.

It is an arithmetic number, because the mean of its divisors is an integer number (28613208).

Almost surely, 2^100146221 is an apocalyptic number.

It is an amenable number.

100146221 is a deficient number, since it is larger than the sum of its proper divisors (14306611).

100146221 is an equidigital number, since it uses as much as digits as its factorization.

100146221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14306610.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 100146221 is about 10007.3083793795. The cubic root of 100146221 is about 464.3850057712.

Adding to 100146221 its reverse (122641001), we get a palindrome (222787222).

The spelling of 100146221 in words is "one hundred million, one hundred forty-six thousand, two hundred twenty-one".