104221015 has 4 divisors (see below), whose sum is σ = 125065224. Its totient is φ = 83376808.

The previous prime is 104221009. The next prime is 104221031. The reversal of 104221015 is 510122401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 510122401 = 3373 ⋅151237.

It is a cyclic number.

It is not a de Polignac number, because 104221015 - 2¹¹ = 104218967 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 104221015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10422097 + ... + 10422106.

It is an arithmetic number, because the mean of its divisors is an integer number (31266306).

Almost surely, 2^104221015 is an apocalyptic number.

104221015 is a deficient number, since it is larger than the sum of its proper divisors (20844209).

104221015 is an equidigital number, since it uses as much as digits as its factorization.

104221015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20844208.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 104221015 is about 10208.8694281003. The cubic root of 104221015 is about 470.5998301968.

Adding to 104221015 its reverse (510122401), we get a palindrome (614343416).

The spelling of 104221015 in words is "one hundred four million, two hundred twenty-one thousand, fifteen".