100221313 has 4 divisors (see below), whose sum is σ = 100286208. Its totient is φ = 100156420.

The previous prime is 100221311. The next prime is 100221323. The reversal of 100221313 is 313122001.

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 100221313 - 2¹ = 100221311 is a prime.

It is a super-3 number, since 3×100221313³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100221293 and 100221302.

It is not an unprimeable number, because it can be changed into a prime (100221311) 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, 30073 + ... + 33238.

It is an arithmetic number, because the mean of its divisors is an integer number (25071552).

Almost surely, 2^100221313 is an apocalyptic number.

It is an amenable number.

100221313 is a deficient number, since it is larger than the sum of its proper divisors (64895).

100221313 is an equidigital number, since it uses as much as digits as its factorization.

100221313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64894.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 100221313 is about 10011.0595343350. The cubic root of 100221313 is about 464.5010457185.

Adding to 100221313 its reverse (313122001), we get a palindrome (413343314).

The spelling of 100221313 in words is "one hundred million, two hundred twenty-one thousand, three hundred thirteen".