21214314232 has 16 divisors (see below), whose sum is σ = 40451023800. Its totient is φ = 10427374560.

The previous prime is 21214314211. The next prime is 21214314239. The reversal of 21214314232 is 23241341212.

It is a junction number, because it is equal to n+sod(n) for n = 21214314197 and 21214314206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214314239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22472319 + ... + 22473262.

Almost surely, 2^21214314232 is an apocalyptic number.

It is an amenable number.

21214314232 is a deficient number, since it is larger than the sum of its proper divisors (19236709568).

21214314232 is a wasteful number, since it uses less digits than its factorization.

21214314232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44945646 (or 44945642 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

Adding to 21214314232 its reverse (23241341212), we get a palindrome (44455655444).

The spelling of 21214314232 in words is "twenty-one billion, two hundred fourteen million, three hundred fourteen thousand, two hundred thirty-two".