21040103303 has 8 divisors (see below), whose sum is σ = 21206156400. Its totient is φ = 20874381760.

The previous prime is 21040103281. The next prime is 21040103311. The reversal of 21040103303 is 30330104012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21040103303 - 2⁶ = 21040103239 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 (21040103333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45308 + ... + 210078.

It is an arithmetic number, because the mean of its divisors is an integer number (2650769550).

Almost surely, 2^21040103303 is an apocalyptic number.

21040103303 is a deficient number, since it is larger than the sum of its proper divisors (166053097).

21040103303 is a wasteful number, since it uses less digits than its factorization.

21040103303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165777.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21040103303 its reverse (30330104012), we get a palindrome (51370207315).

The spelling of 21040103303 in words is "twenty-one billion, forty million, one hundred three thousand, three hundred three".