221214060 has 72 divisors (see below), whose sum is σ = 682050096. Its totient is φ = 58020480.

The previous prime is 221214053. The next prime is 221214073. The reversal of 221214060 is 60412122.

221214060 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

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 23 ways as a sum of consecutive naturals, for example, 907 + ... + 21053.

It is an arithmetic number, because the mean of its divisors is an integer number (9472918).

Almost surely, 2^221214060 is an apocalyptic number.

221214060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221214060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341025048).

221214060 is an abundant number, since it is smaller than the sum of its proper divisors (460836036).

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

221214060 is a wasteful number, since it uses less digits than its factorization.

221214060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20223 (or 20218 counting only the distinct ones).

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

The square root of 221214060 is about 14873.2666216941. The cubic root of 221214060 is about 604.7894994293.

Adding to 221214060 its reverse (60412122), we get a palindrome (281626182).

The spelling of 221214060 in words is "two hundred twenty-one million, two hundred fourteen thousand, sixty".