221987014 has 16 divisors (see below), whose sum is σ = 338114880. Its totient is φ = 109287360.

The previous prime is 221987011. The next prime is 221987021. The reversal of 221987014 is 410789122.

221987014 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221987011) 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, 132172 + ... + 133840.

It is an arithmetic number, because the mean of its divisors is an integer number (21132180).

Almost surely, 2^221987014 is an apocalyptic number.

221987014 is a deficient number, since it is larger than the sum of its proper divisors (116127866).

221987014 is a wasteful number, since it uses less digits than its factorization.

221987014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 221987014 is about 14899.2286377517. The cubic root of 221987014 is about 605.4930879846.

The spelling of 221987014 in words is "two hundred twenty-one million, nine hundred eighty-seven thousand, fourteen".