104221013 has 4 divisors (see below), whose sum is σ = 112238028. Its totient is φ = 96204000.

The previous prime is 104221009. The next prime is 104221031. The reversal of 104221013 is 310122401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64995844 + 39225169 = 8062^2 + 6263^2 .

It is a cyclic number.

It is not a de Polignac number, because 104221013 - 2² = 104221009 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 (104221063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4008488 + ... + 4008513.

It is an arithmetic number, because the mean of its divisors is an integer number (28059507).

Almost surely, 2^104221013 is an apocalyptic number.

104221013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

104221013 is a deficient number, since it is larger than the sum of its proper divisors (8017015).

104221013 is an equidigital number, since it uses as much as digits as its factorization.

104221013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8017014.

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

The square root of 104221013 is about 10208.8693301462. The cubic root of 104221013 is about 470.5998271866.

Adding to 104221013 its reverse (310122401), we get a palindrome (414343414).

The spelling of 104221013 in words is "one hundred four million, two hundred twenty-one thousand, thirteen".