21104050315 has 12 divisors (see below), whose sum is σ = 26473817664. Its totient is φ = 16149184304.

The previous prime is 21104050307. The next prime is 21104050333. The reversal of 21104050315 is 51305040112.

It is a happy number.

It is not a de Polignac number, because 21104050315 - 2³ = 21104050307 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3986779 + ... + 3992068.

It is an arithmetic number, because the mean of its divisors is an integer number (2206151472).

Almost surely, 2^21104050315 is an apocalyptic number.

21104050315 is a deficient number, since it is larger than the sum of its proper divisors (5369767349).

21104050315 is an equidigital number, since it uses as much as digits as its factorization.

21104050315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7978898 (or 7978875 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 21104050315 its reverse (51305040112), we get a palindrome (72409090427).

The spelling of 21104050315 in words is "twenty-one billion, one hundred four million, fifty thousand, three hundred fifteen".