2181214 has 8 divisors (see below), whose sum is σ = 3739248. Its totient is φ = 934800.

The previous prime is 2181209. The next prime is 2181217. The reversal of 2181214 is 4121812.

It is a happy number.

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

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2181191 and 2181200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2181217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77887 + ... + 77914.

It is an arithmetic number, because the mean of its divisors is an integer number (467406).

2^2181214 is an apocalyptic number.

2181214 is a deficient number, since it is larger than the sum of its proper divisors (1558034).

2181214 is a wasteful number, since it uses less digits than its factorization.

2181214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155810.

The product of its digits is 128, while the sum is 19.

The square root of 2181214 is about 1476.8933610793. The cubic root of 2181214 is about 129.6878903264.

The spelling of 2181214 in words is "two million, one hundred eighty-one thousand, two hundred fourteen".