21131314214 has 8 divisors (see below), whose sum is σ = 31704086880. Its totient is φ = 10563285256.

The previous prime is 21131314213. The next prime is 21131314301. The reversal of 21131314214 is 41241313112.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21131314214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21131314213) 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, 1174769 + ... + 1192620.

It is an arithmetic number, because the mean of its divisors is an integer number (3963010860).

Almost surely, 2^21131314214 is an apocalyptic number.

21131314214 is a deficient number, since it is larger than the sum of its proper divisors (10572772666).

21131314214 is a wasteful number, since it uses less digits than its factorization.

21131314214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371854.

The product of its digits is 576, while the sum is 23.

Adding to 21131314214 its reverse (41241313112), we get a palindrome (62372627326).

The spelling of 21131314214 in words is "twenty-one billion, one hundred thirty-one million, three hundred fourteen thousand, two hundred fourteen".