221101313 has 8 divisors (see below), whose sum is σ = 229432896. Its totient is φ = 212914800.

The previous prime is 221101267. The next prime is 221101327. The reversal of 221101313 is 313101122.

221101313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-221101313 is a prime.

It is a super-2 number, since 2×221101313² = 97771581220647938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221901313) 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, 33158 + ... + 39263.

It is an arithmetic number, because the mean of its divisors is an integer number (28679112).

Almost surely, 2^221101313 is an apocalyptic number.

It is an amenable number.

221101313 is a deficient number, since it is larger than the sum of its proper divisors (8331583).

221101313 is an equidigital number, since it uses as much as digits as its factorization.

221101313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72535.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 221101313 is about 14869.4758818191. The cubic root of 221101313 is about 604.6867335238.

Adding to 221101313 its reverse (313101122), we get a palindrome (534202435).

The spelling of 221101313 in words is "two hundred twenty-one million, one hundred one thousand, three hundred thirteen".