221206014 has 24 divisors (see below), whose sum is σ = 480467520. Its totient is φ = 73552608.

The previous prime is 221206001. The next prime is 221206021. The reversal of 221206014 is 410602122.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7662 + ... + 22385.

It is an arithmetic number, because the mean of its divisors is an integer number (20019480).

Almost surely, 2^221206014 is an apocalyptic number.

221206014 is an abundant number, since it is smaller than the sum of its proper divisors (259261506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221206014 is a wasteful number, since it uses less digits than its factorization.

221206014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30464 (or 30461 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 221206014 is about 14872.9961339335. The cubic root of 221206014 is about 604.7821668705.

Adding to 221206014 its reverse (410602122), we get a palindrome (631808136).

The spelling of 221206014 in words is "two hundred twenty-one million, two hundred six thousand, fourteen".