214412021 has 4 divisors (see below), whose sum is σ = 214441344. Its totient is φ = 214382700.

The previous prime is 214411969. The next prime is 214412039. The reversal of 214412021 is 120214412.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 214412021 - 2¹⁰ = 214410997 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 (214412071) 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 3 ways as a sum of consecutive naturals, for example, 6236 + ... + 21626.

It is an arithmetic number, because the mean of its divisors is an integer number (53610336).

Almost surely, 2^214412021 is an apocalyptic number.

It is an amenable number.

214412021 is a deficient number, since it is larger than the sum of its proper divisors (29323).

214412021 is a wasteful number, since it uses less digits than its factorization.

214412021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29322.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 214412021 is about 14642.8146542938. The cubic root of 214412021 is about 598.5260310652.

Adding to 214412021 its reverse (120214412), we get a palindrome (334626433).

The spelling of 214412021 in words is "two hundred fourteen million, four hundred twelve thousand, twenty-one".