12214201421 has 4 divisors (see below), whose sum is σ = 12214659744. Its totient is φ = 12213743100.

The previous prime is 12214201409. The next prime is 12214201427. The reversal of 12214201421 is 12410241221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12214201421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12214201393 and 12214201402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12214201427) 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, 186545 + ... + 243366.

It is an arithmetic number, because the mean of its divisors is an integer number (3053664936).

Almost surely, 2^12214201421 is an apocalyptic number.

It is an amenable number.

12214201421 is a deficient number, since it is larger than the sum of its proper divisors (458323).

12214201421 is an equidigital number, since it uses as much as digits as its factorization.

12214201421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458322.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12214201421 its reverse (12410241221), we get a palindrome (24624442642).

The spelling of 12214201421 in words is "twelve billion, two hundred fourteen million, two hundred one thousand, four hundred twenty-one".