214221000421 has 8 divisors (see below), whose sum is σ = 221620732920. Its totient is φ = 206822121408.

The previous prime is 214221000391. The next prime is 214221000439. The reversal of 214221000421 is 124000122412.

It can be written as a sum of positive squares in 4 ways, for example, as 137470392900 + 76750607521 = 370770^2 + 277039^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 214221000421 - 2⁷ = 214221000293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214221003421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319915 + ... + 728551.

It is an arithmetic number, because the mean of its divisors is an integer number (27702591615).

Almost surely, 2^214221000421 is an apocalyptic number.

It is an amenable number.

214221000421 is a deficient number, since it is larger than the sum of its proper divisors (7399732499).

214221000421 is a wasteful number, since it uses less digits than its factorization.

214221000421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426743.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 214221000421 its reverse (124000122412), we get a palindrome (338221122833).

The spelling of 214221000421 in words is "two hundred fourteen billion, two hundred twenty-one million, four hundred twenty-one", and thus it is an aban number.