21113103104 has 36 divisors (see below), whose sum is σ = 42159707520. Its totient is φ = 10552550400.

The previous prime is 21113103091. The next prime is 21113103113. The reversal of 21113103104 is 40130131112.

It is an unprimeable number.

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, 730529 + ... + 758879.

Almost surely, 2^21113103104 is an apocalyptic number.

It is an amenable number.

21113103104 is a deficient number, since it is larger than the sum of its proper divisors (21046604416).

21113103104 is an equidigital number, since it uses as much as digits as its factorization.

21113103104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31276 (or 31262 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21113103104 its reverse (40130131112), we get a palindrome (61243234216).

The spelling of 21113103104 in words is "twenty-one billion, one hundred thirteen million, one hundred three thousand, one hundred four".