221100413 has 16 divisors (see below), whose sum is σ = 231336000. Its totient is φ = 211152000.

The previous prime is 221100371. The next prime is 221100421. The reversal of 221100413 is 314001122.

It is a cyclic number.

It is not a de Polignac number, because 221100413 - 2⁶ = 221100349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442838 + ... + 443336.

It is an arithmetic number, because the mean of its divisors is an integer number (14458500).

Almost surely, 2^221100413 is an apocalyptic number.

It is an amenable number.

221100413 is a deficient number, since it is larger than the sum of its proper divisors (10235587).

221100413 is a wasteful number, since it uses less digits than its factorization.

221100413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 221100413 is about 14869.4456184486. The cubic root of 221100413 is about 604.6859130571.

Adding to 221100413 its reverse (314001122), we get a palindrome (535101535).

The spelling of 221100413 in words is "two hundred twenty-one million, one hundred thousand, four hundred thirteen".