221214513 has 8 divisors (see below), whose sum is σ = 317641408. Its totient is φ = 136131984.

The previous prime is 221214509. The next prime is 221214533. The reversal of 221214513 is 315412122.

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

It is not a de Polignac number, because 221214513 - 2² = 221214509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 221214513.

It is not an unprimeable number, because it can be changed into a prime (221214533) 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, 2836045 + ... + 2836122.

It is an arithmetic number, because the mean of its divisors is an integer number (39705176).

Almost surely, 2^221214513 is an apocalyptic number.

It is an amenable number.

221214513 is a deficient number, since it is larger than the sum of its proper divisors (96426895).

221214513 is a wasteful number, since it uses less digits than its factorization.

221214513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5672183.

The product of its digits is 480, while the sum is 21.

The square root of 221214513 is about 14873.2818503517. The cubic root of 221214513 is about 604.7899122563.

Adding to 221214513 its reverse (315412122), we get a palindrome (536626635).

The spelling of 221214513 in words is "two hundred twenty-one million, two hundred fourteen thousand, five hundred thirteen".