21235114103 has 16 divisors (see below), whose sum is σ = 25700143680. Its totient is φ = 17128267776.

The previous prime is 21235114099. The next prime is 21235114123. The reversal of 21235114103 is 30141153212.

It is a cyclic number.

It is not a de Polignac number, because 21235114103 - 2² = 21235114099 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 (21235114123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1414943 + ... + 1429871.

It is an arithmetic number, because the mean of its divisors is an integer number (1606258980).

Almost surely, 2^21235114103 is an apocalyptic number.

21235114103 is a deficient number, since it is larger than the sum of its proper divisors (4465029577).

21235114103 is a wasteful number, since it uses less digits than its factorization.

21235114103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26906.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 21235114103 its reverse (30141153212), we get a palindrome (51376267315).

The spelling of 21235114103 in words is "twenty-one billion, two hundred thirty-five million, one hundred fourteen thousand, one hundred three".