21234200116 has 12 divisors (see below), whose sum is σ = 38775496032. Its totient is φ = 10155486968.

The previous prime is 21234200087. The next prime is 21234200129. The reversal of 21234200116 is 61100243212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115403170 + ... + 115403353.

It is an arithmetic number, because the mean of its divisors is an integer number (3231291336).

Almost surely, 2^21234200116 is an apocalyptic number.

It is an amenable number.

21234200116 is a deficient number, since it is larger than the sum of its proper divisors (17541295916).

21234200116 is a wasteful number, since it uses less digits than its factorization.

21234200116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230806550 (or 230806548 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21234200116 its reverse (61100243212), we get a palindrome (82334443328).

The spelling of 21234200116 in words is "twenty-one billion, two hundred thirty-four million, two hundred thousand, one hundred sixteen".