14221021312 has 32 divisors (see below), whose sum is σ = 28689580800. Its totient is φ = 7020499200.

The previous prime is 14221021307. The next prime is 14221021343. The reversal of 14221021312 is 21312012241.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 14221021312.

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, 693064 + ... + 713287.

It is an arithmetic number, because the mean of its divisors is an integer number (896549400).

Almost surely, 2^14221021312 is an apocalyptic number.

It is an amenable number.

14221021312 is an abundant number, since it is smaller than the sum of its proper divisors (14468559488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

14221021312 is an equidigital number, since it uses as much as digits as its factorization.

14221021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406444 (or 1406432 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 14221021312 its reverse (21312012241), we get a palindrome (35533033553).

The spelling of 14221021312 in words is "fourteen billion, two hundred twenty-one million, twenty-one thousand, three hundred twelve".