214020321 has 16 divisors (see below), whose sum is σ = 294576000. Its totient is φ = 138112128.

The previous prime is 214020299. The next prime is 214020329. The reversal of 214020321 is 123020412.

It is not a de Polignac number, because 214020321 - 2¹⁰ = 214019297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 214020321.

It is not an unprimeable number, because it can be changed into a prime (214020329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17245 + ... + 26933.

It is an arithmetic number, because the mean of its divisors is an integer number (18411000).

Almost surely, 2^214020321 is an apocalyptic number.

It is an amenable number.

214020321 is a deficient number, since it is larger than the sum of its proper divisors (80555679).

214020321 is a wasteful number, since it uses less digits than its factorization.

214020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9928.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 214020321 is about 14629.4333793213. The cubic root of 214020321 is about 598.1613351638.

Adding to 214020321 its reverse (123020412), we get a palindrome (337040733).

Subtracting from 214020321 its reverse (123020412), we obtain a palindrome (90999909).

The spelling of 214020321 in words is "two hundred fourteen million, twenty thousand, three hundred twenty-one".