21704027103 has 24 divisors (see below), whose sum is σ = 34760955216. Its totient is φ = 12938313600.

The previous prime is 21704027071. The next prime is 21704027113. The reversal of 21704027103 is 30172040712.

It is a happy number.

It is not a de Polignac number, because 21704027103 - 2⁵ = 21704027071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21704027113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1790950 + ... + 1803027.

It is an arithmetic number, because the mean of its divisors is an integer number (1448373134).

Almost surely, 2^21704027103 is an apocalyptic number.

21704027103 is a deficient number, since it is larger than the sum of its proper divisors (13056928113).

21704027103 is a wasteful number, since it uses less digits than its factorization.

21704027103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594055 (or 3594052 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

Adding to 21704027103 its reverse (30172040712), we get a palindrome (51876067815).

The spelling of 21704027103 in words is "twenty-one billion, seven hundred four million, twenty-seven thousand, one hundred three".