221882215 has 8 divisors (see below), whose sum is σ = 281921040. Its totient is φ = 167064192.

The previous prime is 221882203. The next prime is 221882231. The reversal of 221882215 is 512288122.

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 221882215 - 2⁹ = 221881703 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 1305105 + ... + 1305274.

It is an arithmetic number, because the mean of its divisors is an integer number (35240130).

Almost surely, 2^221882215 is an apocalyptic number.

221882215 is a deficient number, since it is larger than the sum of its proper divisors (60038825).

221882215 is a wasteful number, since it uses less digits than its factorization.

221882215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610401.

The product of its digits is 5120, while the sum is 31.

The square root of 221882215 is about 14895.7112955374. The cubic root of 221882215 is about 605.3977895297.

The spelling of 221882215 in words is "two hundred twenty-one million, eight hundred eighty-two thousand, two hundred fifteen".