214510021 has 8 divisors (see below), whose sum is σ = 238990464. Its totient is φ = 190859520.

The previous prime is 214510007. The next prime is 214510031. The reversal of 214510021 is 120015412.

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 214510021 - 2¹¹ = 214507973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 214509977 and 214510004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214510031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206940 + ... + 207973.

It is an arithmetic number, because the mean of its divisors is an integer number (29873808).

Almost surely, 2^214510021 is an apocalyptic number.

It is an amenable number.

214510021 is a deficient number, since it is larger than the sum of its proper divisors (24480443).

214510021 is a wasteful number, since it uses less digits than its factorization.

214510021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414971.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 214510021 is about 14646.1606231804. The cubic root of 214510021 is about 598.6172053948.

Adding to 214510021 its reverse (120015412), we get a palindrome (334525433).

The spelling of 214510021 in words is "two hundred fourteen million, five hundred ten thousand, twenty-one".