21072210314 has 8 divisors (see below), whose sum is σ = 31660910148. Its totient is φ = 10518573600.

The previous prime is 21072210307. The next prime is 21072210323. The reversal of 21072210314 is 41301227012.

It can be written as a sum of positive squares in 2 ways, for example, as 21067071025 + 5139289 = 145145^2 + 2267^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21072210314.

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, 8764277 + ... + 8766680.

Almost surely, 2^21072210314 is an apocalyptic number.

21072210314 is a deficient number, since it is larger than the sum of its proper divisors (10588699834).

21072210314 is a wasteful number, since it uses less digits than its factorization.

21072210314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17531560.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 21072210314 its reverse (41301227012), we get a palindrome (62373437326).

The spelling of 21072210314 in words is "twenty-one billion, seventy-two million, two hundred ten thousand, three hundred fourteen".